Message type: E = Error
Message class:  FI - TR-FM Funds Management 
Message number: 004
Message text: System error in insert table & (key &2 &3 &4)
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.
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The SAP error message FI004, which states "System error in insert table & (key &2 &3 &4)," typically indicates that there is a problem with inserting data into a database table in the Financial Accounting (FI) module. This error can arise due to various reasons, including database inconsistencies, issues with the data being processed, or problems with the underlying database system. Causes: Database Locking Issues: The table may be locked by another transaction, preventing the current transaction from inserting data. Data Inconsistencies: The data being inserted may violate constraints (e.g., primary key, foreign key) or may not meet the required format. Database Corruption: There could be corruption in the database that is preventing the insert operation. Authorization Issues: The user may not have the necessary permissions to perform the insert operation. System
Configuration Issues: There may be configuration issues in the SAP system or the database that are causing the error. Solutions: Check Database Locks: Use transaction codes
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