SAP Message BK508 - The document is not consistent and cannot be posted

Diagnosis
The CO document that was generated from the document items you enteredis not consistent.

System Response
The document is not posted.

Procedure
Try to post the document again.
(The inconsistency could be caused by a change to a rate of exchangemade while you were posting the data. If you repeat the transaction,the system uses the new exchange rate for all document items and thedocument is now consistent.)