How To Fix ES003 - Specify a pool name beginning with M_

SAP Error Message - Details

• Message type: E = Error

• Message class: ES - ABAP Workbench: Repository Information System

• Message number: 003

• Message text: Specify a pool name beginning with M_

What causes this issue?

If a matchode has matchcode IDs which are not database views, a pooled
table is created with the naming convention MC_<matchcode name>.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Either select generically with MC_*<...> or MC_+<...>, or specify a
full name, e.g. MC_DEBI.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ES003 - Specify a pool name beginning with M_ ?

  The SAP error message ES003, which states "Specify a pool name beginning with M", typically occurs in the context of SAP ABAP programming, particularly when dealing with memory management and internal tables. This error indicates that the system expects a memory pool name that starts with "M".
  Cause:
  
  Incorrect Pool Name: The error is triggered when a pool name that does not conform to the expected naming convention (i.e., not starting with "M_") is specified in the code.
  Configuration Issues: There may be a misconfiguration in the memory management settings or the way memory pools are defined in the system.
  
  Solution:
  
  
  Check Pool Name: Review the code where the pool name is defined. Ensure that the name starts with "M_". For example, if you have defined a pool name as myPool, change it to M_myPool.
  Example:
  DATA: lt_my_table TYPE TABLE OF my_type.
  DATA: lt_M_my_table TYPE TABLE OF my_type. " Correct naming
  
  
  Review Documentation: Consult the SAP documentation or help files related to memory management and internal tables to ensure compliance with naming conventions.
  
  
  Debugging: If the error persists, use debugging tools to trace where the pool name is being set or called. This can help identify any logical errors in the code.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant notes or updates that might address this specific error message.
  
  
  Testing: After making changes, test the program to ensure that the error is resolved and that the functionality works as expected.
  
  
  Related Information:
  
  Memory Management in ABAP: Understanding how memory pools work in ABAP can help prevent similar issues in the future. Memory pools are used to manage memory allocation efficiently.
  SAP Community: Engaging with the SAP Community can provide insights from other developers who may have encountered and resolved similar issues.
  SAP Help Portal: The SAP Help Portal contains extensive documentation on ABAP programming and memory management, which can be useful for understanding best practices.
  
  By following these steps, you should be able to resolve the ES003 error and ensure that your ABAP code adheres to the required naming conventions for memory pools.