How To Fix >1420 - Internal error: posting in mass mode using update task not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: >1 - Shockwave SAPGUI message handling

• Message number: 420

• Message text: Internal error: posting in mass mode using update task not supported

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message >1420 - Internal error: posting in mass mode using update task not supported ?

  The SAP error message 1420: Internal error: posting in mass mode using update task not supported typically occurs when there is an attempt to perform a mass posting operation in a way that is not supported by the system's update task. This error can arise in various scenarios, particularly when using batch input sessions or mass processing transactions.
  Causes:
  
  Mass Processing Restrictions: The error often indicates that the system is trying to execute a mass posting operation that is not allowed in the current context or mode (e.g., using an update task).
  Configuration Issues: There may be configuration settings in the system that restrict certain types of mass postings.
  Custom Code: If there are custom programs or enhancements that attempt to perform mass updates in a way that conflicts with standard SAP processing, this error can occur.
  Transaction Type: Certain transaction types may not support mass processing in the background or update mode.
  
  Solutions:
  
  Use Foreground Processing: If possible, switch to foreground processing instead of background or update task processing for the mass posting operation.
  Check Custom Code: Review any custom ABAP code or enhancements that may be involved in the mass posting process. Ensure that they are not trying to execute in an unsupported manner.
  Review Configuration: Check the configuration settings related to the transaction or process you are trying to execute. Ensure that mass processing is allowed for that specific transaction.
  Batch Input Sessions: If you are using batch input sessions, ensure that they are set up correctly and that the session is being processed in a supported mode.
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently releases notes that provide fixes or workarounds for known issues.
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including the transaction code and any relevant logs.
  
  Related Information:
  
  Transaction Codes: Identify the specific transaction code that triggered the error. This can help in diagnosing the issue.
  System Logs: Check the system logs (SM21) and short dump analysis (ST22) for any additional error messages or information that may provide context for the issue.
  User Authorizations: Ensure that the user executing the mass posting has the necessary authorizations to perform the operation.
  SAP Community: Consider searching or posting in the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.