Internal document no.in G/L acct table not in document header table

What causes this issue?

While scanning the FI interface table for G/L accounts, the system
found (in an item) an internal document number which is not in the
document header.

System Response

Data cannot be processed.

How to fix this error?

This is a system error in the calling application.

Error message extract from SAP system. Copyright SAP SE.