No unique scheduling agreement could be determined

What causes this issue?

No one <DS:GLOS.scheduling_agreement>scheduling agreement</> can be
assigned to the values in the <DS:GLOS.IDoc>IDoc</>.

System Response

The system terminates all processing.

How to fix this error?

Please restart IDOCS processing from mail. The system proposes in the
foreground the IDOC value with its corresponding scheduling agreements.
Choose the appropriate ones.

Error message extract from SAP system. Copyright SAP SE.