diff --git a/packages/js/data/src/countries/actions.ts b/packages/js/data/src/countries/actions.ts
index 51cc2e19832..7970d6bfd2e 100644
--- a/packages/js/data/src/countries/actions.ts
+++ b/packages/js/data/src/countries/actions.ts
@@ -3,7 +3,6 @@
  */
 import TYPES from './action-types';
 import { Locales, Country } from './types';
-import { RestApiError } from '../types';
 
 export function getLocalesSuccess( locales: Locales ) {
 	return {
@@ -12,7 +11,7 @@ export function getLocalesSuccess( locales: Locales ) {
 	};
 }
 
-export function getLocalesError( error: RestApiError ) {
+export function getLocalesError( error: unknown ) {
 	return {
 		type: TYPES.GET_LOCALES_ERROR as const,
 		error,
@@ -26,7 +25,7 @@ export function getCountriesSuccess( countries: Country[] ) {
 	};
 }
 
-export function getCountriesError( error: RestApiError ) {
+export function getCountriesError( error: unknown ) {
 	return {
 		type: TYPES.GET_COUNTRIES_ERROR as const,
 		error,
diff --git a/packages/js/data/src/countries/resolvers.ts b/packages/js/data/src/countries/resolvers.ts
index 6a384500de7..ccdb261276e 100644
--- a/packages/js/data/src/countries/resolvers.ts
+++ b/packages/js/data/src/countries/resolvers.ts
@@ -16,7 +16,6 @@ import {
 import { NAMESPACE } from '../constants';
 import { Locales, Country } from './types';
 import { STORE_NAME } from './constants';
-import { RestApiError } from '../types';
 
 const resolveSelect =
 	controls && controls.resolveSelect ? controls.resolveSelect : select;
@@ -35,7 +34,7 @@ export function* getLocales() {
 
 		return getLocalesSuccess( results );
 	} catch ( error ) {
-		return getLocalesError( error as RestApiError );
+		return getLocalesError( error );
 	}
 }
 
@@ -53,6 +52,6 @@ export function* getCountries() {
 
 		return getCountriesSuccess( results );
 	} catch ( error ) {
-		return getCountriesError( error as RestApiError );
+		return getCountriesError( error );
 	}
 }
diff --git a/packages/js/data/src/countries/types.ts b/packages/js/data/src/countries/types.ts
index ae90b880a00..467e561fbeb 100644
--- a/packages/js/data/src/countries/types.ts
+++ b/packages/js/data/src/countries/types.ts
@@ -41,7 +41,7 @@ export type Locales = {
 
 export type CountriesState = {
 	errors: {
-		[ key: string ]: string | RestApiError | undefined;
+		[ key: string ]: unknown;
 	};
 	locales: Locales;
 	countries: Country[];
diff --git a/packages/js/data/src/payment-gateways/actions.ts b/packages/js/data/src/payment-gateways/actions.ts
index 8b51ec211a9..afed637d2d8 100644
--- a/packages/js/data/src/payment-gateways/actions.ts
+++ b/packages/js/data/src/payment-gateways/actions.ts
@@ -9,7 +9,6 @@ import { apiFetch } from '@wordpress/data-controls';
 import { ACTION_TYPES } from './action-types';
 import { API_NAMESPACE } from './constants';
 import { PaymentGateway } from './types';
-import { RestApiError } from '../types';
 
 export function getPaymentGatewaysRequest(): {
 	type: ACTION_TYPES.GET_PAYMENT_GATEWAYS_REQUEST;
@@ -32,10 +31,10 @@ export function getPaymentGatewaysSuccess(
 }
 
 export function getPaymentGatewaysError(
-	error: RestApiError
+	error: unknown
 ): {
 	type: ACTION_TYPES.GET_PAYMENT_GATEWAYS_ERROR;
-	error: RestApiError;
+	error: unknown;
 } {
 	return {
 		type: ACTION_TYPES.GET_PAYMENT_GATEWAYS_ERROR,
@@ -52,10 +51,10 @@ export function getPaymentGatewayRequest(): {
 }
 
 export function getPaymentGatewayError(
-	error: RestApiError
+	error: unknown
 ): {
 	type: ACTION_TYPES.GET_PAYMENT_GATEWAY_ERROR;
-	error: RestApiError;
+	error: unknown;
 } {
 	return {
 		type: ACTION_TYPES.GET_PAYMENT_GATEWAY_ERROR,
@@ -95,10 +94,10 @@ export function updatePaymentGatewayRequest(): {
 }
 
 export function updatePaymentGatewayError(
-	error: RestApiError
+	error: unknown
 ): {
 	type: ACTION_TYPES.UPDATE_PAYMENT_GATEWAY_ERROR;
-	error: RestApiError;
+	error: unknown;
 } {
 	return {
 		type: ACTION_TYPES.UPDATE_PAYMENT_GATEWAY_ERROR,
@@ -127,7 +126,7 @@ export function* updatePaymentGateway(
 			return response;
 		}
 	} catch ( e ) {
-		yield updatePaymentGatewayError( e as RestApiError );
+		yield updatePaymentGatewayError( e );
 		throw e;
 	}
 }
diff --git a/packages/js/data/src/payment-gateways/resolvers.ts b/packages/js/data/src/payment-gateways/resolvers.ts
index 13d763c7a2a..c345249279f 100644
--- a/packages/js/data/src/payment-gateways/resolvers.ts
+++ b/packages/js/data/src/payment-gateways/resolvers.ts
@@ -21,7 +21,6 @@ import {
 
 import { API_NAMESPACE, STORE_KEY } from './constants';
 import { PaymentGateway } from './types';
-import { RestApiError } from '../types';
 
 // Can be removed in WP 5.9.
 const dispatch =
@@ -44,7 +43,7 @@ export function* getPaymentGateways() {
 			);
 		}
 	} catch ( e ) {
-		yield getPaymentGatewaysError( e as RestApiError );
+		yield getPaymentGatewaysError( e );
 	}
 }
 
@@ -61,6 +60,6 @@ export function* getPaymentGateway( id: string ) {
 			return response;
 		}
 	} catch ( e ) {
-		yield getPaymentGatewayError( e as RestApiError );
+		yield getPaymentGatewayError( e );
 	}
 }
diff --git a/packages/js/data/src/payment-gateways/selectors.ts b/packages/js/data/src/payment-gateways/selectors.ts
index df7bc7f2e9f..ee45abe0f47 100644
--- a/packages/js/data/src/payment-gateways/selectors.ts
+++ b/packages/js/data/src/payment-gateways/selectors.ts
@@ -2,7 +2,7 @@
  * Internal dependencies
  */
 import { PaymentGateway, PluginsState } from './types';
-import { RestApiError, WPDataSelector, WPDataSelectors } from '../types';
+import { WPDataSelector, WPDataSelectors } from '../types';
 
 export function getPaymentGateway(
 	state: PluginsState,
@@ -22,7 +22,7 @@ export function getPaymentGateways(
 export function getPaymentGatewayError(
 	state: PluginsState,
 	selector: string
-): RestApiError | null {
+): unknown | null {
 	return state.errors[ selector ] || null;
 }
 
diff --git a/packages/js/data/src/payment-gateways/test/reducer.ts b/packages/js/data/src/payment-gateways/test/reducer.ts
index 293e7f91798..075116be6a3 100644
--- a/packages/js/data/src/payment-gateways/test/reducer.ts
+++ b/packages/js/data/src/payment-gateways/test/reducer.ts
@@ -18,9 +18,6 @@ const defaultState: PluginsState = {
 
 const restApiError = {
 	code: 'error code',
-	data: {
-		status: 400,
-	},
 	message: 'error message',
 };
 
diff --git a/packages/js/data/src/payment-gateways/types.ts b/packages/js/data/src/payment-gateways/types.ts
index 17c23c966a0..24393e9e537 100644
--- a/packages/js/data/src/payment-gateways/types.ts
+++ b/packages/js/data/src/payment-gateways/types.ts
@@ -1,7 +1,6 @@
 /**
  * Internal dependencies
  */
-import { RestApiError } from '../types';
 
 export type SettingDefinition = {
 	default: string;
@@ -31,5 +30,5 @@ export type PaymentGateway = {
 export type PluginsState = {
 	paymentGateways: PaymentGateway[];
 	isUpdating: boolean;
-	errors: Record< string, RestApiError >;
+	errors: Record< string, unknown >;
 };