How To Fix C7135 - Error while reading internal table Operation

SAP Error Message - Details

• Message type: E = Error

• Message class: C7 - Scheduling

• Message number: 135

• Message text: Error while reading internal table Operation

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message C7135 - Error while reading internal table Operation ?

  The SAP error message C7135, "Error while reading internal table Operation," typically occurs in the context of SAP's production planning or project management modules. This error indicates that there is an issue with accessing or processing an internal table that is supposed to hold operation data.
  Causes:
  
  Data Inconsistency: The internal table may contain inconsistent or corrupted data, which prevents the system from reading it properly.
  Program Logic Error: There may be a bug in the ABAP code that is trying to read the internal table, such as incorrect indexing or logic that leads to an invalid state.
  Missing Data: Required data for the operation may be missing, leading to an inability to read the internal table correctly.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access certain data, which can lead to errors when trying to read the internal table.
  System Performance Issues: If the system is under heavy load, it may lead to timeouts or other issues that prevent proper reading of internal tables.
  
  Solutions:
  
  Check Data Consistency: Use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to check the relevant tables for inconsistencies or missing entries.
  Debugging: If you have access to the ABAP code, use the debugger to step through the code where the error occurs. Look for any logical errors or incorrect assumptions about the data.
  Review Authorizations: Ensure that the user has the necessary authorizations to access the data being read. You can check this in transaction SU53 or by consulting with your security team.
  System Performance: Monitor system performance and check for any locks or long-running processes that might be affecting the ability to read the internal table.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error. There may be patches or updates available that resolve known issues.
  Recreate the Scenario: If possible, try to recreate the scenario in a test environment to see if the error persists. This can help isolate the issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11, SE16, SE80 (Object Navigator), and SE37 (Function Module).
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review SAP documentation related to the specific module you are working with (e.g., Production Planning, Project System) for any known issues or troubleshooting steps.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis or development team for further investigation.