How To Fix FMCY300 - *--- 301 to 399 reserved for copy handler (generic and FM part) ---*

FMCY300 - Overview

• Message type: E = Error

• Message class: FMCY - Copy budget data

• Message number: 300

• Message text: *--- 301 to 399 reserved for copy handler (generic and FM part) ---*

Self-Explanatory Message

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FMCY300 - Details

• The SAP error message FMCY300, which indicates that the message numbers from 301 to 399 are reserved for the copy handler (generic and function module part), typically arises in the context of function module or program execution where a specific error handling mechanism is expected.
  
  Cause:
  
  Reserved Message Numbers: The error message is triggered because the system is trying to use a message number that is reserved for internal SAP processes, specifically for the copy handler. This means that the function module or program is attempting to access or generate a message that is not available for user-defined or custom messages.
  Incorrect Message Handling: If a custom function module or program is trying to raise an error or warning using a message number in the reserved range, it will lead to this error.
  
  
  Solution:
  
  Check Message Numbers: Review the code in the function module or program to ensure that it is not using any message