How To Fix 0M800 - Internal error (Expansion of includes used more than once)

SAP Error Message - Details

• Message type: E = Error

• Message class: 0M - Customer Enhancements

• Message number: 800

• Message text: Internal error (Expansion of includes used more than once)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 0M800 - Internal error (Expansion of includes used more than once) ?

  The SAP error message 0M800 indicates an "Internal error (Expansion of includes used more than once)." This error typically occurs during the compilation of ABAP programs when the system encounters an issue with the inclusion of code that has been defined multiple times, leading to conflicts or ambiguities.
  Cause:
  
  Multiple Inclusions: The error is often caused by including the same include file multiple times in a program or in different programs that are being compiled together. This can lead to conflicts in definitions or unexpected behavior.
  Circular Includes: If there are circular references in the includes, where two or more include files reference each other, it can also lead to this error.
  Code Changes: Recent changes in the code or includes that have not been properly managed can also trigger this error.
  
  Solution:
  
  Check Include Statements: Review the ABAP program and check all the include statements. Ensure that each include is only included once. You can use the #define directive to prevent multiple inclusions.
  Use INCLUDE with #IF: If you need to include the same code in multiple places, consider using conditional compilation with #IF and #ENDIF to ensure that the code is only included once.
  Refactor Code: If possible, refactor the code to minimize the use of includes or to consolidate common code into a single include that is used appropriately.
  Check for Circular References: Ensure that there are no circular references among the includes. This can be done by reviewing the include hierarchy.
  Recompile: After making changes, recompile the program to see if the error persists.
  
  Related Information:
  
  ABAP Development: Understanding how includes work in ABAP is crucial. Includes are used to modularize code and promote reusability, but they must be managed carefully to avoid conflicts.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error. Sometimes, specific versions of SAP may have bugs that are documented in SAP Notes.
  Debugging: If the error persists, consider using the ABAP debugger to trace the execution and see where the includes are being expanded.
  
  If the problem continues after trying the above solutions, it may be beneficial to consult with a more experienced ABAP developer or reach out to SAP support for further assistance.