Invalid PO Line Number Error while importing Invoice

Hello Team,

We are trying to receive Invoices via OBN from a new vendor. All the required configurations were completed in Fusion Cloud ERP .Invoice was successfully processed in OBN and then it was successfully processed in CMK (collaboration messaging) in cloud. But once invoice processed in CMK and when trying to import invoice into Payables module we notice that invoice import failed with error as 'Invalid PO Line Number'.

Please let me know you have any inputs/ideas to share which could fix this issue and the invoice gets created in successfully.

Thanks in Advance!