How To Fix SOI_TPSQL009 - More than 1 Interface or class definition in one file

SAP Error Message - Details

• Message type: E = Error

• Message class: SOI_TPSQL -

• Message number: 009

• Message text: More than 1 Interface or class definition in one file

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SOI_TPSQL009 - More than 1 Interface or class definition in one file ?

  The SAP error message SOI_TPSQL009 indicates that there is more than one interface or class definition in a single file, which is not allowed in the context of SAP ABAP programming. This error typically arises when you are trying to define multiple classes or interfaces in a single source code file, which violates the structure expected by the ABAP runtime environment.
  Cause:
  
  Multiple Definitions: The primary cause of this error is the presence of more than one class or interface definition in a single ABAP program or include file.
  Improper File Structure: ABAP requires that each class or interface be defined in its own file to maintain clarity and organization.
  
  Solution:
  To resolve this error, you need to ensure that each class or interface is defined in its own separate file. Here are the steps to do this:
  
  
  Identify the Classes/Interfaces: Open the file that is causing the error and identify all the class and interface definitions present in that file.
  
  
  Separate the Definitions: For each class or interface, create a new ABAP program or include file. You can do this by:
  
  Copying the code for each class/interface into a new file.
  Naming the new files appropriately, typically following the naming conventions for classes and interfaces in ABAP.
  
  
  
  Adjust References: If there are any references to the classes or interfaces in the original file, ensure that they are updated to point to the new files.
  
  
  Activate the Changes: After separating the definitions, activate each of the new files in the ABAP Workbench (SE80 or SE38).
  
  
  Test the Changes: Run your program or transaction again to ensure that the error has been resolved.
  
  
  Related Information:
  
  ABAP Naming Conventions: Familiarize yourself with the naming conventions for classes and interfaces in ABAP to ensure that your new files are named correctly.
  ABAP Development Guidelines: Review SAP's development guidelines for best practices in structuring your ABAP code.
  Documentation: Refer to the official SAP documentation for more details on class and interface definitions in ABAP.
  
  By following these steps, you should be able to resolve the SOI_TPSQL009 error and maintain a well-structured ABAP codebase.