Error during In-App Provisioning (eligibility step, PKErrorHTTPResponseStatusCodeKey=500)

Hello,

We are implementing in-app provisioning in our fintech app; the card issuer is a third party, so we have limited control and visibility. We have ruled out the causes we could investigate on our side and on the card issuer’s side.

We are reaching out to ask for your help in understanding what is going wrong so we can fix it.

What happens:

User taps “Add to Apple Wallet” → we present PKAddPaymentPassViewController → they tap Next → after a few seconds the flow fails with "Set Up Later" alert.

Device log:

ProvisioningOperationComposer: Step 'eligibility' failed with error <PKProvisioningError: severity: 'terminal'; internalDebugDescriptions: '(
    "eligibility request failure",
    "Received HTTP 500"
)'; underlyingError: 'Error Domain=PKPaymentWebServiceErrorDomain Code=0 "Unexpected error." UserInfo={PKErrorHTTPResponseStatusCodeKey=500, NSLocalizedDescription=Unexpected error.}'; userInfo: '{
    PKErrorHTTPResponseStatusCodeKey = 500;
}';

Feedback Assistant ID: FB22007923 (Error during the In-App Provisioning process)