Message type: E = Error
Message class:  FI - TR-FM Funds Management 
Message number: 871
Message text: Length of criteria belonging to criteria category &1 must be &2
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The SAP error message FI871 indicates that there is an issue with the length of the criteria defined for a specific criteria category in the Financial Accounting (FI) module. This error typically arises when the length of the criteria you are trying to enter exceeds the allowed limit defined for that particular criteria category.
Cause: The error occurs when: You are trying to enter a value for a criteria category that exceeds the maximum length allowed for that category. The configuration settings for the criteria category have defined a specific length, and your input does not comply with that length requirement.
Solution: To resolve the FI871 error, you can take the following steps: Check the Criteria Category Configuration: Go to the configuration settings for the criteria category in question. This can usually be found in the SAP Customizing Implementation Guide (IMG) under Financial Accounting. Verify the maximum length defined for the criteria category. Adjust Your Input: Ensure that the value you
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