@dev-D-S I seem to be encountering the same posting error, to be safe, adding a new comment (not a reply to your prior): I found this post: https://developer.apple.com/forums/thread/762893 and have created a feedback assistance request as mentioned. I did include all details, including the sysdiagnose log file. If you haven't yet, I strongly recommend following the instructions on gathering those extra details via sysdiagnose.

Hi @dev-D-S and @DTS Engineer, We were experiencing the same issue, have added the identical nonce and nonceSignature to the encrypted card data, but continue to receive the error: 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; }'; >