OMS did not recieve a PDF file

What causes this issue?

During the presentation of a print document by means of layout
formatting by an output management system (OMS), the PDF file that is
created by calling the RFC-capable (inbound) function module
FKK_PREV_OMS_IMPORT_PDF is sent back to the FI-CA system. The initiating
process receives the PDF file there.
The file was not received. No entry for process key &V1& was found for
the PDF file in the temporary storage table.

System Response

Processing cannot be continued.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Check for the reason that the OMS did not receive the PDF file.

Error message extract from SAP system. Copyright SAP SE.