Message type: E = Error
Message class:  ICC-FI - Dunning (Sweden) 
Message number: 018
Message text: This function is not available for format &1
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.
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The SAP error message ICC-FI018, which states "This function is not available for format &1," typically occurs in the context of financial accounting or when dealing with specific formats in SAP. This error indicates that the function you are trying to execute is not supported for the specified format.
Cause: Unsupported Format: The format specified (denoted by &1) is not compatible with the function you are trying to use. This could be due to the format being outdated, not configured correctly, or simply not supported by the system.
Configuration Issues: There may be configuration settings in the SAP system that do not allow certain functions to be executed for the specified format. Version Compatibility: The version of SAP you are using may not support the function for the specified format, especially if it is a custom or third-party format.
Solution: Check Format Compatibility: Verify that the format you are using is indeed supported for the function
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