How To Fix EG201 - Error writing class data of target objects

SAP Error Message - Details

• Message type: E = Error

• Message class: EG - IS-U device management

• Message number: 201

• Message text: Error writing class data of target objects

What causes this issue?

An occured while writing class data of target objects.

System Response

Processing could not continue.

How to fix this error?

Check your entries for target objects.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EG201 - Error writing class data of target objects ?

  The SAP error message EG201, which states "Error writing class data of target objects," typically occurs during the execution of a program or transaction that involves object-oriented programming in ABAP (Advanced Business Application Programming). This error can arise due to various reasons, including issues with the data being processed, problems with the target objects, or inconsistencies in the class definitions.
  Causes of EG201 Error
  
  
  Data Inconsistency: The data being written to the target objects may not conform to the expected structure or type, leading to a failure in writing the class data.
  
  
  Object State: The target objects may be in an invalid state or not properly initialized, which can prevent data from being written.
  
  
  Authorization Issues: The user executing the transaction may not have the necessary authorizations to write data to the target objects.
  
  
  Memory Issues: Insufficient memory or resources available in the SAP system can also lead to this error.
  
  
  Code Errors: There may be bugs or logical errors in the ABAP code that is attempting to write the class data.
  
  
  Solutions to EG201 Error
  
  
  Check Data Validity: Ensure that the data being written to the target objects is valid and conforms to the expected structure. Validate the data types and ensure that all required fields are populated.
  
  
  Initialize Objects: Make sure that the target objects are properly initialized before attempting to write data to them. This can involve checking constructors or initialization methods.
  
  
  Review Authorizations: Verify that the user has the necessary authorizations to perform the operation. This may involve checking roles and permissions in the SAP system.
  
  
  Debugging: Use the ABAP debugger to step through the code and identify the exact point of failure. This can help in pinpointing the cause of the error.
  
  
  Check System Resources: Monitor the system for memory usage and resource availability. If the system is low on resources, consider optimizing the code or increasing the available resources.
  
  
  Review Code Logic: Look for any logical errors in the ABAP code that may lead to this error. This includes checking loops, conditions, and data handling.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or patches that may address this specific error. There may be known issues or updates that can resolve the problem.
  
  
  Contact SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP Support for further assistance.
  
  
  Related Information
  
  
  Transaction Codes: Depending on the context of the error, you may want to check transaction codes related to the specific functionality you are working with (e.g., SE80 for Object Navigator, SE37 for Function Modules).
  
  
  ABAP Documentation: Review the ABAP documentation for best practices in object-oriented programming and error handling.
  
  
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  
  By following these steps, you should be able to diagnose and resolve the EG201 error in your SAP environment.