SAP Message BEA050 - Serious error in data management (action was terminated)

Diagnosis
The transfer status can be updated either synchronously (that is, inthe same transaction) or asynchronously (that is, in anothertransaction) after Accounting is called. A mixture of both is notallowed - but this is precisely what has occurred here.
This is the result of a program error or inconsistent data.

System Response
The system terminates processing.

Procedure
Contact your system administrator.