Message type: E = Error
Message class:  FI - TR-FM Funds Management 
Message number: 179
Message text: The document was updated
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 FI179 ("The document was updated") typically occurs in the context of financial document processing, such as during posting or updating financial documents in the SAP system. This error indicates that the document you are trying to process has already been updated or modified by another user or process, which prevents your current action from being completed.
Causes:
Concurrent Updates: Another user or process has already updated the document you are trying to work with.
Locking Mechanism: SAP uses a locking mechanism to prevent multiple users from making changes to the same document simultaneously. If the document is locked by another session, you may encounter this error.
Background Jobs: A background job may have updated the document while you were trying to process it.
Data Consistency: The system may have detected inconsistencies in the document data, leading to an update that you are not aware of.
Solutions:
Refresh the Document: Try refreshing the document Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
FI178 Reconsider parameter selection
What causes this issue?  You have chosen <LS>Test run</> without selecting <LS>Log</>.System Response  The system does not sto...
FI177 Payment matching is not active
What causes this issue?  You want to carry out payment matching, but the payment matching functions have not been activate in Customizing.System Respo...
FI180 Can only be accessed with transaction FM_S123
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FI181 Payment matching carried out only in commitment budget
What causes this issue?  The <DS:GLOS.update profile>update profile</> 000500 is aktive. In this profile it is defined that availability c...
Click on this link to search all SAP messages.