diff --git a/packages/xrpl/src/models/common/index.ts b/packages/xrpl/src/models/common/index.ts
index bd7e1279..e8b3b76f 100644
--- a/packages/xrpl/src/models/common/index.ts
+++ b/packages/xrpl/src/models/common/index.ts
@@ -4,15 +4,13 @@ interface XRP {
   currency: 'XRP'
 }
 
-interface IssuedCurrency {
+export interface IssuedCurrency {
   currency: string
   issuer: string
 }
 
 export type Currency = IssuedCurrency | XRP
 
-export type Issue = Currency
-
 export interface IssuedCurrencyAmount extends IssuedCurrency {
   value: string
 }
diff --git a/packages/xrpl/src/models/methods/ammInfo.ts b/packages/xrpl/src/models/methods/ammInfo.ts
index 6ad5135f..c033d3af 100644
--- a/packages/xrpl/src/models/methods/ammInfo.ts
+++ b/packages/xrpl/src/models/methods/ammInfo.ts
@@ -1,4 +1,4 @@
-import { Amount, Issue, IssuedCurrencyAmount } from '../common'
+import { Amount, IssuedCurrency, IssuedCurrencyAmount } from '../common'
 
 import { BaseRequest, BaseResponse } from './baseMethod'
 
@@ -15,13 +15,13 @@ export interface AMMInfoRequest extends BaseRequest {
    * Specifies one of the pool assets (XRP or token) of the AMM instance.
    * Both asset and asset2 must be defined to specify an AMM instance.
    */
-  asset?: Issue
+  asset?: IssuedCurrency
 
   /**
    * Specifies the other pool asset of the AMM instance.
    * Both asset and asset2 must be defined to specify an AMM instance.
    */
-  asset2?: Issue
+  asset2?: IssuedCurrency
 }
 
 interface AuthAccount {
diff --git a/packages/xrpl/src/models/transactions/AMMBid.ts b/packages/xrpl/src/models/transactions/AMMBid.ts
index 1a6ec810..e5ff1a95 100644
--- a/packages/xrpl/src/models/transactions/AMMBid.ts
+++ b/packages/xrpl/src/models/transactions/AMMBid.ts
@@ -1,6 +1,6 @@
 /* eslint-disable complexity -- required for validateAMMBid */
 import { ValidationError } from '../../errors'
-import { Amount, Issue } from '../common'
+import { Amount, IssuedCurrency } from '../common'
 
 import {
   BaseTransaction,
@@ -29,12 +29,12 @@ export interface AMMBid extends BaseTransaction {
   /**
    * Specifies one of the pool assets (XRP or token) of the AMM instance.
    */
-  Asset: Issue
+  Asset: IssuedCurrency
 
   /**
    * Specifies the other pool asset of the AMM instance.
    */
-  Asset2: Issue
+  Asset2: IssuedCurrency
 
   /**
    * This field represents the minimum price that the bidder wants to pay for the slot.
diff --git a/packages/xrpl/src/models/transactions/AMMDeposit.ts b/packages/xrpl/src/models/transactions/AMMDeposit.ts
index 0770d338..9177b12f 100644
--- a/packages/xrpl/src/models/transactions/AMMDeposit.ts
+++ b/packages/xrpl/src/models/transactions/AMMDeposit.ts
@@ -1,6 +1,6 @@
 /* eslint-disable complexity -- required for validateAMMDeposit */
 import { ValidationError } from '../../errors'
-import { Amount, Issue, IssuedCurrencyAmount } from '../common'
+import { Amount, IssuedCurrency, IssuedCurrencyAmount } from '../common'
 
 import {
   BaseTransaction,
@@ -49,12 +49,12 @@ export interface AMMDeposit extends BaseTransaction {
   /**
    * Specifies one of the pool assets (XRP or token) of the AMM instance.
    */
-  Asset: Issue
+  Asset: IssuedCurrency
 
   /**
    * Specifies the other pool asset of the AMM instance.
    */
-  Asset2: Issue
+  Asset2: IssuedCurrency
 
   /**
    * Specifies the amount of shares of the AMM instance pools that the trader
diff --git a/packages/xrpl/src/models/transactions/AMMVote.ts b/packages/xrpl/src/models/transactions/AMMVote.ts
index ce33acfe..cd19c736 100644
--- a/packages/xrpl/src/models/transactions/AMMVote.ts
+++ b/packages/xrpl/src/models/transactions/AMMVote.ts
@@ -1,5 +1,5 @@
 import { ValidationError } from '../../errors'
-import { Issue } from '../common'
+import { IssuedCurrency } from '../common'
 
 import { AMM_MAX_TRADING_FEE } from './AMMCreate'
 import { BaseTransaction, isIssue, validateBaseTransaction } from './common'
@@ -16,12 +16,12 @@ export interface AMMVote extends BaseTransaction {
   /**
    * Specifies one of the pool assets (XRP or token) of the AMM instance.
    */
-  Asset: Issue
+  Asset: IssuedCurrency
 
   /**
    * Specifies the other pool asset of the AMM instance.
    */
-  Asset2: Issue
+  Asset2: IssuedCurrency
 
   /**
    * Specifies the fee, in basis point.
diff --git a/packages/xrpl/src/models/transactions/AMMWithdraw.ts b/packages/xrpl/src/models/transactions/AMMWithdraw.ts
index 1d8a9aa9..4a64431a 100644
--- a/packages/xrpl/src/models/transactions/AMMWithdraw.ts
+++ b/packages/xrpl/src/models/transactions/AMMWithdraw.ts
@@ -1,6 +1,6 @@
 /* eslint-disable complexity -- required for validateAMMWithdraw */
 import { ValidationError } from '../../errors'
-import { Amount, Issue, IssuedCurrencyAmount } from '../common'
+import { Amount, IssuedCurrency, IssuedCurrencyAmount } from '../common'
 
 import {
   BaseTransaction,
@@ -54,12 +54,12 @@ export interface AMMWithdraw extends BaseTransaction {
   /**
    * Specifies one of the pool assets (XRP or token) of the AMM instance.
    */
-  Asset: Issue
+  Asset: IssuedCurrency
 
   /**
    * Specifies the other pool asset of the AMM instance.
    */
-  Asset2: Issue
+  Asset2: IssuedCurrency
 
   /**
    * Specifies the amount of shares of the AMM instance pools that the trader
diff --git a/packages/xrpl/src/models/transactions/common.ts b/packages/xrpl/src/models/transactions/common.ts
index bd330b7b..b685730c 100644
--- a/packages/xrpl/src/models/transactions/common.ts
+++ b/packages/xrpl/src/models/transactions/common.ts
@@ -4,7 +4,13 @@
 import { TRANSACTION_TYPES } from 'ripple-binary-codec'
 
 import { ValidationError } from '../../errors'
-import { Amount, Issue, IssuedCurrencyAmount, Memo, Signer } from '../common'
+import {
+  Amount,
+  IssuedCurrency,
+  IssuedCurrencyAmount,
+  Memo,
+  Signer,
+} from '../common'
 import { onlyHasFields } from '../utils'
 
 const MEMO_SIZE = 3
@@ -50,17 +56,36 @@ function isSigner(obj: unknown): boolean {
   )
 }
 
+const XRP_CURRENCY_SIZE = 1
+const ISSUE_SIZE = 2
 const ISSUED_CURRENCY_SIZE = 3
 
 function isRecord(value: unknown): value is Record<string, unknown> {
   return value !== null && typeof value === 'object'
 }
 
+/**
+ * Verify the form and type of an IssuedCurrency at runtime.
+ *
+ * @param input - The input to check the form and type of.
+ * @returns Whether the IssuedCurrency is properly formed.
+ */
+export function isIssue(input: unknown): input is IssuedCurrency {
+  return (
+    isRecord(input) &&
+    ((Object.keys(input).length === ISSUE_SIZE &&
+      typeof input.issuer === 'string' &&
+      typeof input.currency === 'string') ||
+      (Object.keys(input).length === XRP_CURRENCY_SIZE &&
+        input.currency === 'XRP'))
+  )
+}
+
 /**
  * Verify the form and type of an IssuedCurrencyAmount at runtime.
  *
  * @param input - The input to check the form and type of.
- * @returns Whether the IssuedCurrencyAmount is malformed.
+ * @returns Whether the IssuedCurrencyAmount is properly formed.
  */
 export function isIssuedCurrency(
   input: unknown,
@@ -78,31 +103,12 @@ export function isIssuedCurrency(
  * Verify the form and type of an Amount at runtime.
  *
  * @param amount - The object to check the form and type of.
- * @returns Whether the Amount is malformed.
+ * @returns Whether the Amount is properly formed.
  */
 export function isAmount(amount: unknown): amount is Amount {
   return typeof amount === 'string' || isIssuedCurrency(amount)
 }
 
-/**
- * Verify the form and type of an Issue at runtime.
- *
- * @param input - The object to check the form and type of.
- * @returns Whether the Issue is malformed.
- */
-export function isIssue(input: unknown): input is Issue {
-  if (!isRecord(input)) {
-    return false
-  }
-  const length = Object.keys(input).length
-  return (
-    (length === 1 && input.currency === 'XRP') ||
-    (length === 2 &&
-      typeof input.currency === 'string' &&
-      typeof input.issuer === 'string')
-  )
-}
-
 // eslint-disable-next-line @typescript-eslint/no-empty-interface -- no global flags right now, so this is fine
 export interface GlobalFlags {}