How To Fix GU721 - Error in reading internal table

SAP Error Message - Details

• Message type: E = Error

• Message class: GU - FI-SL utilities

• Message number: 721

• Message text: Error in reading internal table

What causes this issue?

The FI-SL master data is stored in special tables. An error occurred
when these tables were read.

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?

Inform your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GU721 - Error in reading internal table ?

  The SAP error message GU721, which indicates "Error in reading internal table," typically arises when there is an issue with the internal data structures used by the SAP system. This error can occur in various contexts, such as during report execution, data processing, or when accessing certain transactions.
  Causes of GU721 Error
  
  Data Corruption: The internal table may have become corrupted due to an inconsistency in the data or a failed process.
  Memory Issues: Insufficient memory allocation for the internal table can lead to this error, especially if the table is large.
  Programming Errors: Custom ABAP programs or enhancements may have bugs that lead to improper handling of internal tables.
  Database Issues: Problems with the underlying database, such as locks or inconsistencies, can also trigger this error.
  Transport Issues: If the system has recently undergone a transport of changes, it may lead to inconsistencies in the internal tables.
  
  Solutions to GU721 Error
  
  Check for Data Consistency: Use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to check the relevant tables for inconsistencies or corruption.
  Review Custom Code: If the error occurs in a custom program, review the ABAP code for any logical errors, especially in the handling of internal tables.
  Increase Memory Allocation: If the error is related to memory, consider increasing the memory allocation for the SAP instance.
  Run Database Consistency Checks: Use transaction codes like DB02 or DBACOCKPIT to check for database consistency and resolve any issues found.
  Check for Locks: Use transaction SM12 to check for any locks that might be affecting the internal tables.
  Re-transport Objects: If the error started after a transport, consider re-transporting the objects or checking for missing dependencies.
  SAP Notes: Search the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide patches.
  
  Related Information
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE80 (Object Navigator), SE37 (Function Module), and ST22 (Dump Analysis) to analyze the error further.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if it involves critical business processes.
  
  By following these steps, you should be able to diagnose and resolve the GU721 error effectively.