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

>1420 - Overview

• 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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

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: