Message type: E = Error
Message class:  REASSG_COSTS_REVENUE - Reassign Costs and Revenues 
Message number: 005
Message text: Document &1 not reversed
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.
Unfortunately, there isn't any extra information in this error notice.
First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).
Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.
You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.
The SAP error message REASSG_COSTS_REVENUE005 indicates that a document (identified by &1) cannot be reversed. This error typically occurs in the context of financial accounting or controlling when attempting to reverse a document that has certain restrictions or conditions preventing the reversal. Causes: Document Status: The document may be in a status that does not allow for reversal. For example, if the document has already been cleared or settled, it cannot be reversed. Posting Period: The posting period for the document may be closed. If the period is closed, you cannot reverse documents posted in that period. Document Type Restrictions: Certain document types may have restrictions on reversals based on configuration settings in the system. Dependencies on Other Documents: The document may be linked to other documents (e.g., invoices, payments) that prevent its reversal. Authorization Issues: The user attempting to reverse the document may not have the necessary authorizations to perform the reversal. Solutions: Check Document Status: Verify
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
REASSG_COSTS_REVENUE004 Posting Date or Journal Entry Date is empty
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
REASSG_COSTS_REVENUE003 Document &1 not found
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
REASSG_COSTS_REVENUE006 Controlling Area is not filled
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
REBD001 Valid-from date of object is before valid-from date of group
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.