diff --git a/packages/ripple-binary-codec/src/binary.ts b/packages/ripple-binary-codec/src/binary.ts
index f578f944..52f52a1f 100644
--- a/packages/ripple-binary-codec/src/binary.ts
+++ b/packages/ripple-binary-codec/src/binary.ts
@@ -15,6 +15,7 @@ import { STObject } from './types/st-object'
 import { JsonObject } from './types/serialized-type'
 import { Buffer } from 'buffer/'
 import bigInt = require('big-integer')
+import { AmountObject } from './types/amount'
 
 /**
  * Construct a BinaryParser
@@ -122,7 +123,7 @@ function signingData(
  */
 interface ClaimObject extends JsonObject {
   channel: string
-  amount: string | number
+  amount: AmountObject
 }
 
 /**
@@ -133,16 +134,19 @@ interface ClaimObject extends JsonObject {
  * @returns the serialized object with appropriate prefix
  */
 function signingClaimData(claim: ClaimObject): Buffer {
-  const num = bigInt(String(claim.amount))
   const prefix = HashPrefix.paymentChannelClaim
   const channel = coreTypes.Hash256.from(claim.channel).toBytes()
-  const amount = coreTypes.UInt64.from(num).toBytes()
-
   const bytesList = new BytesList()
-
   bytesList.put(prefix)
   bytesList.put(channel)
-  bytesList.put(amount)
+  if (typeof claim.amount === 'string') {
+    const num = bigInt(String(claim.amount))
+    const amount = coreTypes.UInt64.from(num).toBytes()
+    bytesList.put(amount)
+  } else {
+    const amount = coreTypes.Amount.from(claim.amount).toBytes()
+    bytesList.put(amount)
+  }
   return bytesList.toBytes()
 }
 
diff --git a/packages/ripple-binary-codec/test/signing-data-encoding.test.js b/packages/ripple-binary-codec/test/signing-data-encoding.test.js
index 71a0c26c..ef4db5b0 100644
--- a/packages/ripple-binary-codec/test/signing-data-encoding.test.js
+++ b/packages/ripple-binary-codec/test/signing-data-encoding.test.js
@@ -170,59 +170,7 @@ describe('Signing data', function () {
       ].join(''),
     )
   })
-
-  test('can create multi signing blobs with custom definitions', function () {
-    const customPaymentDefinitions = JSON.parse(
-      JSON.stringify(normalDefinitions),
-    )
-    customPaymentDefinitions.TRANSACTION_TYPES.Payment = 31
-
-    const newDefs = new XrplDefinitions(customPaymentDefinitions)
-    const signingAccount = 'rJZdUusLDtY9NEsGea7ijqhVrXv98rYBYN'
-    const signingJson = { ...tx_json, SigningPubKey: '' }
-    const actual = encodeForMultisigning(signingJson, signingAccount, newDefs)
-    expect(actual).toBe(
-      [
-        '534D5400', // signingPrefix
-        // TransactionType
-        '12',
-        '001F',
-        // Flags
-        '22',
-        '80000000',
-        // Sequence
-        '24',
-        '00000001',
-        // Amount
-        '61',
-        // native amount
-        '40000000000003E8',
-        // Fee
-        '68',
-        // native amount
-        '400000000000000A',
-        // SigningPubKey
-        '73',
-        // VLLength
-        '00',
-        // '',
-        // Account
-        '81',
-        // VLLength
-        '14',
-        '5B812C9D57731E27A2DA8B1830195F88EF32A3B6',
-        // Destination
-        '83',
-        // VLLength
-        '14',
-        'B5F762798A53D543A014CAF8B297CFF8F2F937E8',
-        // signingAccount suffix
-        'C0A5ABEF242802EFED4B041E8F2D4A8CC86AE3D1',
-      ].join(''),
-    )
-  })
-
-  test('can create claim blob', function () {
+  test('can create native claim blob', function () {
     const channel =
       '43904CBFCDCEC530B4037871F86EE90BF799DF8D2E0EA564BC8A3F332E4F5FB1'
     const amount = '1000'
@@ -239,4 +187,27 @@ describe('Signing data', function () {
       ].join(''),
     )
   })
+  test('can create ic claim blob', function () {
+    const channel =
+      '43904CBFCDCEC530B4037871F86EE90BF799DF8D2E0EA564BC8A3F332E4F5FB1'
+    const amount = {
+      issuer: 'rJZdUusLDtY9NEsGea7ijqhVrXv98rYBYN',
+      currency: 'USD',
+      value: '10',
+    }
+    const json = { channel, amount }
+    const actual = encodeForSigningClaim(json)
+    expect(actual).toBe(
+      [
+        // hash prefix
+        '434C4D00',
+        // channel ID
+        '43904CBFCDCEC530B4037871F86EE90BF799DF8D2E0EA564BC8A3F332E4F5FB1',
+        // amount as a uint64
+        'D4C38D7EA4C680000000000000000000000000005553440000000000C0A5ABEF',
+        // amount as a uint64
+        '242802EFED4B041E8F2D4A8CC86AE3D1',
+      ].join(''),
+    )
+  })
 })
diff --git a/packages/xrpl/src/models/ledger/Escrow.ts b/packages/xrpl/src/models/ledger/Escrow.ts
index 1ddd446e..f56eee94 100644
--- a/packages/xrpl/src/models/ledger/Escrow.ts
+++ b/packages/xrpl/src/models/ledger/Escrow.ts
@@ -1,7 +1,9 @@
+import { Amount } from '../common'
+
 import BaseLedgerEntry from './BaseLedgerEntry'
 
 /**
- * The Escrow object type represents a held payment of XRP waiting to be
+ * The Escrow object type represents a held payment waiting to be
  * executed or canceled.
  *
  * @category Ledger Entries
@@ -10,17 +12,17 @@ export default interface Escrow extends BaseLedgerEntry {
   LedgerEntryType: 'Escrow'
   /**
    * The address of the owner (sender) of this held payment. This is the
-   * account that provided the XRP, and gets it back if the held payment is
+   * account that provided the amounts, and gets it back if the held payment is
    * canceled.
    */
   Account: string
   /**
-   * The destination address where the XRP is paid if the held payment is
+   * The destination address where the amounts are paid if the held payment is
    * successful.
    */
   Destination: string
-  /** The amount of XRP, in drops, to be delivered by the held payment. */
-  Amount: string
+  /** The amount to be delivered by the held payment. */
+  Amount: Amount
   /**
    * A PREIMAGE-SHA-256 crypto-condition, as hexadecimal. If present, the
    * EscrowFinish transaction must contain a fulfillment that satisfies this
@@ -71,4 +73,9 @@ export default interface Escrow extends BaseLedgerEntry {
    * modified this object.
    */
   PreviousTxnLgrSeq: number
+  /**
+   * The fee to charge when users finish an escrow, initially set on the
+   * creation of an escrow contract, and updated on subsequent finish transactions
+   */
+  TransferRate?: number
 }
diff --git a/packages/xrpl/src/models/ledger/PayChannel.ts b/packages/xrpl/src/models/ledger/PayChannel.ts
index 84080ac6..de7de227 100644
--- a/packages/xrpl/src/models/ledger/PayChannel.ts
+++ b/packages/xrpl/src/models/ledger/PayChannel.ts
@@ -1,9 +1,11 @@
+import { Amount } from '../common'
+
 import BaseLedgerEntry from './BaseLedgerEntry'
 
 /**
  * The PayChannel object type represents a payment channel. Payment channels
- * enable small, rapid off-ledger payments of XRP that can be later reconciled
- * with the consensus ledger. A payment channel holds a balance of XRP that can
+ * enable small, rapid off-ledger payments that can be later reconciled
+ * with the consensus ledger. A payment channel holds a balance that can
  * only be paid out to a specific destination address until the channel is
  * closed.
  *
@@ -18,37 +20,37 @@ export default interface PayChannel extends BaseLedgerEntry {
   Account: string
   /**
    * The destination address for this payment channel. While the payment
-   * channel is open, this address is the only one that can receive XRP from the
+   * channel is open, this address is the only one that can receive amounts from the
    * channel. This comes from the Destination field of the transaction that
    * created the channel.
    */
   Destination: string
   /**
-   * Total XRP, in drops, that has been allocated to this channel. This
-   * includes XRP that has been paid to the destination address. This is
-   * initially set by the transaction that created the channel and can be
-   * increased if the source address sends a PaymentChannelFund transaction.
+   * Total amount that has been allocated to this channel. This includes amounts
+   * that have been paid to the destination address. This is initially set by the
+   * transaction that created the channel and can be increased if the source
+   * address sends a PaymentChannelFund transaction.
    */
-  Amount: string
+  Amount: Amount
   /**
-   * Total XRP, in drops, already paid out by the channel. The difference
-   * between this value and the Amount field is how much XRP can still be paid
-   * to the destination address with PaymentChannelClaim transactions. If the
-   * channel closes, the remaining difference is returned to the source address.
+   * Total amount already paid out by the channel. The difference between this value
+   * and the Amount field is how much can still be paid to the destination address
+   * with PaymentChannelClaim transactions. If the channel closes, the remaining
+   * difference is returned to the source address.
    */
-  Balance: string
+  Balance: Amount
   /**
    * Public key, in hexadecimal, of the key pair that can be used to sign
    * claims against this channel. This can be any valid secp256k1 or Ed25519
    * public key. This is set by the transaction that created the channel and
    * must match the public key used in claims against the channel. The channel
-   * source address can also send XRP from this channel to the destination
+   * source address can also send amounts from this channel to the destination
    * without signed claims.
    */
   PublicKey: string
   /**
    * Number of seconds the source address must wait to close the channel if
-   * it still has any XRP in it. Smaller values mean that the destination
+   * it still has any amount in it. Smaller values mean that the destination
    * address has less time to redeem any outstanding claims after the source
    * address requests to close the channel. Can be any value that fits in a
    * 32-bit unsigned integer (0 to 2^32-1). This is set by the transaction that
@@ -104,4 +106,10 @@ export default interface PayChannel extends BaseLedgerEntry {
    * this object, in case the directory consists of multiple pages.
    */
   DestinationNode?: string
+  /**
+   * The fee to charge when users make claims on a payment channel, initially
+   * set on the creation of a payment channel and updated on subsequent funding
+   * or claim transactions.
+   */
+  TransferRate?: number
 }
diff --git a/packages/xrpl/src/models/methods/accountChannels.ts b/packages/xrpl/src/models/methods/accountChannels.ts
index ad2c51af..beb0e2a3 100644
--- a/packages/xrpl/src/models/methods/accountChannels.ts
+++ b/packages/xrpl/src/models/methods/accountChannels.ts
@@ -1,10 +1,10 @@
-import { LedgerIndex } from '../common'
+import { Amount, LedgerIndex } from '../common'
 
 import { BaseRequest, BaseResponse } from './baseMethod'
 
 interface Channel {
   account: string
-  amount: string
+  amount: Amount
   balance: string
   channel_id: string
   destination_account: string
@@ -15,6 +15,7 @@ interface Channel {
   cancel_after?: number
   source_tab?: number
   destination_tag?: number
+  transfer_rate?: number
 }
 
 /**
diff --git a/packages/xrpl/src/models/methods/accountLines.ts b/packages/xrpl/src/models/methods/accountLines.ts
index fb2e3c71..45e53ffc 100644
--- a/packages/xrpl/src/models/methods/accountLines.ts
+++ b/packages/xrpl/src/models/methods/accountLines.ts
@@ -1,4 +1,4 @@
-import { LedgerIndex } from '../common'
+import { Amount, LedgerIndex } from '../common'
 
 import { BaseRequest, BaseResponse } from './baseMethod'
 
@@ -64,6 +64,14 @@ export interface Trustline {
    * false.
    */
   freeze_peer?: boolean
+  /**
+   * The total amount of FT, in drops/Amount locked in payment channels or escrow.
+   */
+  locked_balance?: Amount
+  /**
+   * The total number of lock balances on a RippleState ledger object.
+   */
+  lock_count?: number
 }
 
 /**
diff --git a/packages/xrpl/src/models/methods/channelVerify.ts b/packages/xrpl/src/models/methods/channelVerify.ts
index 0a53c544..0be6edc4 100644
--- a/packages/xrpl/src/models/methods/channelVerify.ts
+++ b/packages/xrpl/src/models/methods/channelVerify.ts
@@ -9,7 +9,7 @@ import { BaseRequest, BaseResponse } from './baseMethod'
  */
 export interface ChannelVerifyRequest extends BaseRequest {
   command: 'channel_verify'
-  /** The amount of XRP, in drops, the provided signature authorizes. */
+  /** The amount the provided signature authorizes. */
   amount: string
   /**
    * The Channel ID of the channel that provides the XRP. This is a
diff --git a/packages/xrpl/src/models/transactions/escrowCancel.ts b/packages/xrpl/src/models/transactions/escrowCancel.ts
index 573d504f..91863913 100644
--- a/packages/xrpl/src/models/transactions/escrowCancel.ts
+++ b/packages/xrpl/src/models/transactions/escrowCancel.ts
@@ -3,7 +3,7 @@ import { ValidationError } from '../../errors'
 import { BaseTransaction, validateBaseTransaction } from './common'
 
 /**
- * Return escrowed XRP to the sender.
+ * Return escrowed amount to the sender.
  *
  * @category Transaction Models
  */
diff --git a/packages/xrpl/src/models/transactions/escrowCreate.ts b/packages/xrpl/src/models/transactions/escrowCreate.ts
index aeb2d88b..8c0a327f 100644
--- a/packages/xrpl/src/models/transactions/escrowCreate.ts
+++ b/packages/xrpl/src/models/transactions/escrowCreate.ts
@@ -1,22 +1,23 @@
 /* eslint-disable complexity -- Necessary for validateEscrowCreate */
 import { ValidationError } from '../../errors'
+import { Amount } from '../common'
 
-import { BaseTransaction, validateBaseTransaction } from './common'
+import { BaseTransaction, isAmount, validateBaseTransaction } from './common'
 
 /**
- * Sequester XRP until the escrow process either finishes or is canceled.
+ * Sequester amount until the escrow process either finishes or is canceled.
  *
  * @category Transaction Models
  */
 export interface EscrowCreate extends BaseTransaction {
   TransactionType: 'EscrowCreate'
   /**
-   * Amount of XRP, in drops, to deduct from the sender's balance and escrow.
-   * Once escrowed, the XRP can either go to the Destination address (after the.
-   * FinishAfter time) or returned to the sender (after the CancelAfter time).
+   * Amount to deduct from the sender's balance and escrow. Once escrowed, the
+   * amount can either go to the Destination address (after the FinishAfter time)
+   * or returned to the sender (after the CancelAfter time).
    */
-  Amount: string
-  /** Address to receive escrowed XRP. */
+  Amount: Amount
+  /** Address to receive escrowed amount. */
   Destination: string
   /**
    * The time, in seconds since the Ripple Epoch, when this escrow expires.
@@ -25,7 +26,7 @@ export interface EscrowCreate extends BaseTransaction {
    */
   CancelAfter?: number
   /**
-   * The time, in seconds since the Ripple Epoch, when the escrowed XRP can be
+   * The time, in seconds since the Ripple Epoch, when the escrowed amount can be
    * released to the recipient. This value is immutable; the funds cannot move.
    * until this time is reached.
    */
@@ -55,8 +56,8 @@ export function validateEscrowCreate(tx: Record<string, unknown>): void {
     throw new ValidationError('EscrowCreate: missing field Amount')
   }
 
-  if (typeof tx.Amount !== 'string') {
-    throw new ValidationError('EscrowCreate: Amount must be a string')
+  if (typeof tx.Amount !== 'string' && !isAmount(tx.Amount)) {
+    throw new ValidationError('EscrowCreate: Amount must be an Amount')
   }
 
   if (tx.Destination === undefined) {
diff --git a/packages/xrpl/src/models/transactions/escrowFinish.ts b/packages/xrpl/src/models/transactions/escrowFinish.ts
index 7a362018..1382402c 100644
--- a/packages/xrpl/src/models/transactions/escrowFinish.ts
+++ b/packages/xrpl/src/models/transactions/escrowFinish.ts
@@ -3,7 +3,7 @@ import { ValidationError } from '../../errors'
 import { BaseTransaction, validateBaseTransaction } from './common'
 
 /**
- * Deliver XRP from a held payment to the recipient.
+ * Deliver amount from a held payment to the recipient.
  *
  * @category Transaction Models
  */
diff --git a/packages/xrpl/src/models/transactions/paymentChannelClaim.ts b/packages/xrpl/src/models/transactions/paymentChannelClaim.ts
index 4aeda9ac..2d4e1535 100644
--- a/packages/xrpl/src/models/transactions/paymentChannelClaim.ts
+++ b/packages/xrpl/src/models/transactions/paymentChannelClaim.ts
@@ -1,7 +1,13 @@
 /* eslint-disable complexity -- Necessary for validatePaymentChannelClaim */
 import { ValidationError } from '../../errors'
+import { Amount } from '../common'
 
-import { BaseTransaction, GlobalFlags, validateBaseTransaction } from './common'
+import {
+  BaseTransaction,
+  GlobalFlags,
+  validateBaseTransaction,
+  isAmount,
+} from './common'
 
 /**
  * Enum representing values for PaymentChannelClaim transaction flags.
@@ -18,15 +24,15 @@ export enum PaymentChannelClaimFlags {
   /**
    * Request to close the channel. Only the channel source and destination
    * addresses can use this flag. This flag closes the channel immediately if it
-   * has no more XRP allocated to it after processing the current claim, or if
+   * has no more funds allocated to it after processing the current claim, or if
    * the destination address uses it. If the source address uses this flag when
-   * the channel still holds XRP, this schedules the channel to close after
+   * the channel still holds an amount, this schedules the channel to close after
    * SettleDelay seconds have passed. (Specifically, this sets the Expiration of
    * the channel to the close time of the previous ledger plus the channel's
    * SettleDelay time, unless the channel already has an earlier Expiration
    * time.) If the destination address uses this flag when the channel still
-   * holds XRP, any XRP that remains after processing the claim is returned to
-   * the source address.
+   * holds an amount, any amount that remains after processing the claim is
+   * returned to the source address.
    */
   tfClose = 0x00020000,
 }
@@ -78,21 +84,21 @@ export interface PaymentChannelClaimFlagsInterface extends GlobalFlags {
   /**
    * Request to close the channel. Only the channel source and destination
    * addresses can use this flag. This flag closes the channel immediately if it
-   * has no more XRP allocated to it after processing the current claim, or if
+   * has no more funds allocated to it after processing the current claim, or if
    * the destination address uses it. If the source address uses this flag when
-   * the channel still holds XRP, this schedules the channel to close after
+   * the channel still holds an amount, this schedules the channel to close after
    * SettleDelay seconds have passed. (Specifically, this sets the Expiration of
    * the channel to the close time of the previous ledger plus the channel's
    * SettleDelay time, unless the channel already has an earlier Expiration
    * time.) If the destination address uses this flag when the channel still
-   * holds XRP, any XRP that remains after processing the claim is returned to
-   * the source address.
+   * holds an amount, any amount that remains after processing the claim is
+   * returned to the source address.
    */
   tfClose?: boolean
 }
 
 /**
- * Claim XRP from a payment channel, adjust the payment channel's expiration,
+ * Claim amount from a payment channel, adjust the payment channel's expiration,
  * or both.
  *
  * @category Transaction Models
@@ -103,18 +109,18 @@ export interface PaymentChannelClaim extends BaseTransaction {
   /** The unique ID of the channel as a 64-character hexadecimal string. */
   Channel: string
   /**
-   * Total amount of XRP, in drops, delivered by this channel after processing
-   * this claim. Required to deliver XRP. Must be more than the total amount
-   * delivered by the channel so far, but not greater than the Amount of the
-   * signed claim. Must be provided except when closing the channel.
+   * Total amount delivered by this channel after processing this claim. Required
+   * to deliver amount. Must be more than the total amount delivered by the channel
+   * so far, but not greater than the Amount of the signed claim. Must be provided
+   * except when closing the channel.
    */
-  Balance?: string
+  Balance?: Amount
   /**
-   * The amount of XRP, in drops, authorized by the Signature. This must match
-   * the amount in the signed message. This is the cumulative amount of XRP that
-   * can be dispensed by the channel, including XRP previously redeemed.
+   * The amount authorized by the Signature. This must match the amount in the
+   * signed message. This is the cumulative amount that can be dispensed by the
+   * channel, including amounts previously redeemed. Required unless closing the channel.
    */
-  Amount?: string
+  Amount?: Amount
   /**
    * The signature of this claim, as hexadecimal. The signed message contains
    * the channel ID and the amount of the claim. Required unless the sender of
@@ -147,12 +153,12 @@ export function validatePaymentChannelClaim(tx: Record<string, unknown>): void {
     throw new ValidationError('PaymentChannelClaim: Channel must be a string')
   }
 
-  if (tx.Balance !== undefined && typeof tx.Balance !== 'string') {
-    throw new ValidationError('PaymentChannelClaim: Balance must be a string')
+  if (tx.Balance !== undefined && !isAmount(tx.Balance)) {
+    throw new ValidationError('PaymentChannelClaim: Balance must be an Amount')
   }
 
-  if (tx.Amount !== undefined && typeof tx.Amount !== 'string') {
-    throw new ValidationError('PaymentChannelClaim: Amount must be a string')
+  if (tx.Amount !== undefined && !isAmount(tx.Amount)) {
+    throw new ValidationError('PaymentChannelClaim: Amount must be an Amount')
   }
 
   if (tx.Signature !== undefined && typeof tx.Signature !== 'string') {
diff --git a/packages/xrpl/src/models/transactions/paymentChannelCreate.ts b/packages/xrpl/src/models/transactions/paymentChannelCreate.ts
index 6bde2c20..90f98ea6 100644
--- a/packages/xrpl/src/models/transactions/paymentChannelCreate.ts
+++ b/packages/xrpl/src/models/transactions/paymentChannelCreate.ts
@@ -1,10 +1,11 @@
 /* eslint-disable complexity -- Necessary for validatePaymentChannelCreate */
 import { ValidationError } from '../../errors'
+import { Amount } from '../common'
 
-import { BaseTransaction, validateBaseTransaction } from './common'
+import { BaseTransaction, validateBaseTransaction, isAmount } from './common'
 
 /**
- * Create a unidirectional channel and fund it with XRP. The address sending
+ * Create a unidirectional channel and fund it. The address sending
  * this transaction becomes the "source address" of the payment channel.
  *
  * @category Transaction Models
@@ -12,20 +13,20 @@ import { BaseTransaction, validateBaseTransaction } from './common'
 export interface PaymentChannelCreate extends BaseTransaction {
   TransactionType: 'PaymentChannelCreate'
   /**
-   * Amount of XRP, in drops, to deduct from the sender's balance and set aside
-   * in this channel. While the channel is open, the XRP can only go to the
-   * Destination address. When the channel closes, any unclaimed XRP is returned
-   * to the source address's balance.
+   * Amount to deduct from the sender's balance and set aside in this channel.
+   * While the channel is open, the amount can only go to the Destination
+   * address. When the channel closes, any unclaimed amount is returned to
+   * the source address's balance.
    */
-  Amount: string
+  Amount: Amount
   /**
-   * Address to receive XRP claims against this channel. This is also known as
+   * Address to receive claims against this channel. This is also known as
    * the "destination address" for the channel.
    */
   Destination: string
   /**
    * Amount of time the source address must wait before closing the channel if
-   * it has unclaimed XRP.
+   * it has unclaimed amount.
    */
   SettleDelay: number
   /**
@@ -65,8 +66,8 @@ export function validatePaymentChannelCreate(
     throw new ValidationError('PaymentChannelCreate: missing Amount')
   }
 
-  if (typeof tx.Amount !== 'string') {
-    throw new ValidationError('PaymentChannelCreate: Amount must be a string')
+  if (typeof tx.Amount !== 'string' && !isAmount(tx.Amount)) {
+    throw new ValidationError('PaymentChannelCreate: Amount must be an Amount')
   }
 
   if (tx.Destination === undefined) {
diff --git a/packages/xrpl/src/models/transactions/paymentChannelFund.ts b/packages/xrpl/src/models/transactions/paymentChannelFund.ts
index 8c46687a..5c381461 100644
--- a/packages/xrpl/src/models/transactions/paymentChannelFund.ts
+++ b/packages/xrpl/src/models/transactions/paymentChannelFund.ts
@@ -1,9 +1,10 @@
 import { ValidationError } from '../../errors'
+import { Amount } from '../common'
 
-import { BaseTransaction, validateBaseTransaction } from './common'
+import { BaseTransaction, validateBaseTransaction, isAmount } from './common'
 
 /**
- * Add additional XRP to an open payment channel, and optionally update the
+ * Add additional amount to an open payment channel, and optionally update the
  * expiration time of the channel. Only the source address of the channel can
  * use this transaction.
  *
@@ -17,16 +18,15 @@ export interface PaymentChannelFund extends BaseTransaction {
    */
   Channel: string
   /**
-   * Amount of XRP in drops to add to the channel. Must be a positive amount
-   * of XRP.
+   * Amount to add to the channel. Must be a positive amount
    */
-  Amount: string
+  Amount: Amount
   /**
    * New Expiration time to set for the channel in seconds since the Ripple
    * Epoch. This must be later than either the current time plus the SettleDelay
    * of the channel, or the existing Expiration of the channel. After the
    * Expiration time, any transaction that would access the channel closes the
-   * channel without taking its normal action. Any unspent XRP is returned to
+   * channel without taking its normal action. Any unspent amount is returned to
    * the source address when the channel closes. (Expiration is separate from
    * the channel's immutable CancelAfter time.) For more information, see the
    * PayChannel ledger object type.
@@ -55,8 +55,8 @@ export function validatePaymentChannelFund(tx: Record<string, unknown>): void {
     throw new ValidationError('PaymentChannelFund: missing Amount')
   }
 
-  if (typeof tx.Amount !== 'string') {
-    throw new ValidationError('PaymentChannelFund: Amount must be a string')
+  if (typeof tx.Amount !== 'string' && !isAmount(tx.Amount)) {
+    throw new ValidationError('PaymentChannelFund: Amount must be an Amount')
   }
 
   if (tx.Expiration !== undefined && typeof tx.Expiration !== 'number') {
diff --git a/packages/xrpl/test/models/escrowCreate.test.ts b/packages/xrpl/test/models/escrowCreate.test.ts
index 20ccf40f..1ec09612 100644
--- a/packages/xrpl/test/models/escrowCreate.test.ts
+++ b/packages/xrpl/test/models/escrowCreate.test.ts
@@ -82,12 +82,12 @@ describe('EscrowCreate', function () {
     assert.throws(
       () => validateEscrowCreate(escrow),
       ValidationError,
-      'EscrowCreate: Amount must be a string',
+      'EscrowCreate: Amount must be an Amount',
     )
     assert.throws(
       () => validate(escrow),
       ValidationError,
-      'EscrowCreate: Amount must be a string',
+      'EscrowCreate: Amount must be an Amount',
     )
   })
 
diff --git a/packages/xrpl/test/models/paymentChannelClaim.test.ts b/packages/xrpl/test/models/paymentChannelClaim.test.ts
index af9c9735..f1958860 100644
--- a/packages/xrpl/test/models/paymentChannelClaim.test.ts
+++ b/packages/xrpl/test/models/paymentChannelClaim.test.ts
@@ -77,12 +77,12 @@ describe('PaymentChannelClaim', function () {
     assert.throws(
       () => validatePaymentChannelClaim(channel),
       ValidationError,
-      'PaymentChannelClaim: Balance must be a string',
+      'PaymentChannelClaim: Balance must be an Amount',
     )
     assert.throws(
       () => validate(channel),
       ValidationError,
-      'PaymentChannelClaim: Balance must be a string',
+      'PaymentChannelClaim: Balance must be an Amount',
     )
   })
 
@@ -92,12 +92,12 @@ describe('PaymentChannelClaim', function () {
     assert.throws(
       () => validatePaymentChannelClaim(channel),
       ValidationError,
-      'PaymentChannelClaim: Amount must be a string',
+      'PaymentChannelClaim: Amount must be an Amount',
     )
     assert.throws(
       () => validate(channel),
       ValidationError,
-      'PaymentChannelClaim: Amount must be a string',
+      'PaymentChannelClaim: Amount must be an Amount',
     )
   })
 
diff --git a/packages/xrpl/test/models/paymentChannelCreate.test.ts b/packages/xrpl/test/models/paymentChannelCreate.test.ts
index 848132ad..8bf30ef3 100644
--- a/packages/xrpl/test/models/paymentChannelCreate.test.ts
+++ b/packages/xrpl/test/models/paymentChannelCreate.test.ts
@@ -106,12 +106,12 @@ describe('PaymentChannelCreate', function () {
     assert.throws(
       () => validatePaymentChannelCreate(channel),
       ValidationError,
-      'PaymentChannelCreate: Amount must be a string',
+      'PaymentChannelCreate: Amount must be an Amount',
     )
     assert.throws(
       () => validate(channel),
       ValidationError,
-      'PaymentChannelCreate: Amount must be a string',
+      'PaymentChannelCreate: Amount must be an Amount',
     )
   })
 
diff --git a/packages/xrpl/test/models/paymentChannelFund.test.ts b/packages/xrpl/test/models/paymentChannelFund.test.ts
index 65c39c98..fd18f80f 100644
--- a/packages/xrpl/test/models/paymentChannelFund.test.ts
+++ b/packages/xrpl/test/models/paymentChannelFund.test.ts
@@ -70,12 +70,12 @@ describe('PaymentChannelFund', function () {
     assert.throws(
       () => validatePaymentChannelFund(channel),
       ValidationError,
-      'PaymentChannelFund: Amount must be a string',
+      'PaymentChannelFund: Amount must be an Amount',
     )
     assert.throws(
       () => validate(channel),
       ValidationError,
-      'PaymentChannelFund: Amount must be a string',
+      'PaymentChannelFund: Amount must be an Amount',
     )
   })