IDOC does not contain a valid object number (segment E1COOBJ)

What causes this issue?

There is no valid object number in the IDOC of type COTOTL. Either
there is no segment E1COOBJ or the object number transaction data in
E1COOBJ is managed in the receiver system and cannot, therefore, be
overwritten.

System Response

You cannot process the IDOC.

How to fix this error?

If there is at least one E1COOBJ segment in the IDOC, check the logical
systems for the relevant objects (cost centers) in both the sender and
receiver systems. Make sure that they agree, then send the totals
records again if necessary.
If there is no E1COOBJ segment in the IDOC and the sender system is an
SAP system, report the error to the SAP hotline. Otherwise, ensure
that the IDOC contains at least one E1COOBJ segment.

Error message extract from SAP system. Copyright SAP SE.