diff --git a/packages/backend/src/config/app.ts b/packages/backend/src/config/app.ts
index b01aaaa088..29a3c7070a 100644
--- a/packages/backend/src/config/app.ts
+++ b/packages/backend/src/config/app.ts
@@ -132,10 +132,19 @@ export const Config = {
 
   incomingPaymentWorkers: envInt('INCOMING_PAYMENT_WORKERS', 1),
   incomingPaymentWorkerIdle: envInt('INCOMING_PAYMENT_WORKER_IDLE', 200), // milliseconds
-  pollIncomingPaymentCreatedWebhook: envBool('POLL_INCOMING_PAYMENT_CREATED_WEBHOOK', false),
-  incomingPaymentCreatedPollTimeout: envInt('INCOMING_PAYMENT_CREATED_POLL_TIMEOUT_MS', 10000), // milliseconds
-  incomingPaymentCreatedPollFrequency: envInt('INCOMING_PAYMENT_CREATED_POLL_FREQUENCY_MS', 1000), // milliseconds
-  
+  pollIncomingPaymentCreatedWebhook: envBool(
+    'POLL_INCOMING_PAYMENT_CREATED_WEBHOOK',
+    false
+  ),
+  incomingPaymentCreatedPollTimeout: envInt(
+    'INCOMING_PAYMENT_CREATED_POLL_TIMEOUT_MS',
+    10000
+  ), // milliseconds
+  incomingPaymentCreatedPollFrequency: envInt(
+    'INCOMING_PAYMENT_CREATED_POLL_FREQUENCY_MS',
+    1000
+  ), // milliseconds
+
   webhookWorkers: envInt('WEBHOOK_WORKERS', 1),
   webhookWorkerIdle: envInt('WEBHOOK_WORKER_IDLE', 200), // milliseconds
   webhookUrl: envString('WEBHOOK_URL'),
diff --git a/packages/backend/src/open_payments/payment/incoming/errors.ts b/packages/backend/src/open_payments/payment/incoming/errors.ts
index e9f520a3bd..76a79c8b44 100644
--- a/packages/backend/src/open_payments/payment/incoming/errors.ts
+++ b/packages/backend/src/open_payments/payment/incoming/errors.ts
@@ -25,7 +25,7 @@ export const errorToHTTPCode: {
   [IncomingPaymentError.InvalidExpiry]: 400,
   [IncomingPaymentError.WrongState]: 409,
   [IncomingPaymentError.InactiveWalletAddress]: 400,
-  [IncomingPaymentError.ActionNotPerformed]: 400
+  [IncomingPaymentError.ActionNotPerformed]: 403
 }
 
 export const errorToCode: {
@@ -38,7 +38,7 @@ export const errorToCode: {
   [IncomingPaymentError.InvalidExpiry]: GraphQLErrorCode.BadUserInput,
   [IncomingPaymentError.WrongState]: GraphQLErrorCode.Conflict,
   [IncomingPaymentError.InactiveWalletAddress]: GraphQLErrorCode.Inactive,
-  [IncomingPaymentError.ActionNotPerformed]: GraphQLErrorCode.Timeout,
+  [IncomingPaymentError.ActionNotPerformed]: GraphQLErrorCode.Timeout
 }
 
 export const errorToMessage: {
diff --git a/packages/backend/src/open_payments/payment/incoming/service.ts b/packages/backend/src/open_payments/payment/incoming/service.ts
index 76006fd3b3..0b19676d04 100644
--- a/packages/backend/src/open_payments/payment/incoming/service.ts
+++ b/packages/backend/src/open_payments/payment/incoming/service.ts
@@ -121,7 +121,7 @@ async function createIncomingPayment(
       return IncomingPaymentError.InvalidAmount
     }
   }
-  
+
   let incomingPayment = await IncomingPayment.query(trx || deps.knex)
     .insertAndFetch({
       walletAddressId: walletAddressId,
@@ -148,27 +148,28 @@ async function createIncomingPayment(
 
   try {
     const response = await poll({
-      request: async () => getApprovedOrCanceledIncomingPayment(deps, { id: incomingPayment.id }),
+      request: async () =>
+        getApprovedOrCanceledIncomingPayment(deps, { id: incomingPayment.id }),
       pollingFrequencyMs: deps.config.incomingPaymentCreatedPollFrequency,
       timeoutMs: deps.config.incomingPaymentCreatedPollTimeout
     })
 
     if (response) return response
     return IncomingPaymentError.ActionNotPerformed
-  }catch(err) {
+  } catch (err) {
     return IncomingPaymentError.ActionNotPerformed
   }
-
 }
 
-async function getApprovedOrCanceledIncomingPayment(deps: ServiceDependencies, options: GetOptions) {
-  const incomingPayment = await getIncomingPayment(deps, { id: options.id })
-
-  if (incomingPayment?.approvedAt || incomingPayment?.cancelledAt) {
-    return incomingPayment
-  }
-
-  return undefined
+async function getApprovedOrCanceledIncomingPayment(
+  deps: ServiceDependencies,
+  options: GetOptions
+) {
+  return IncomingPayment.query(deps.knex)
+    .get(options)
+    .withGraphFetched('[asset, walletAddress]')
+    .whereNotNull('approvedAt')
+    .orWhereNotNull('cancelledAt')
 }
 
 // Fetch (and lock) an incoming payment for work.