How To Fix 1M021 - No transaction type /medium could be determined for posting category &1

1M021 - Overview

• Message type: E = Error

• Message class: 1M - BKK: Abschluß

• Message number: 021

• Message text: No transaction type /medium could be determined for posting category &1

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 1M021 - No transaction type /medium could be determined for posting category &1 ?

  The SAP error message 1M021 indicates that the system is unable to determine a transaction type or medium for a specific posting category. This typically occurs in the context of financial postings, where the system needs to know how to process a particular transaction based on its category.
  
  Cause:
  The error can arise due to several reasons:
  
  Missing Configuration: The transaction type or medium for the specified posting category has not been configured in the system.
  Incorrect Posting Category: The posting category being used may not be valid or recognized by the system.
  Master Data Issues: The master data related to the transaction may be incomplete or incorrectly set up.
  Authorization Issues: The user may not have the necessary authorizations to perform the transaction.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Configuration:
  
  Go to the configuration settings for the relevant module (e.g., Financial Accounting, Controlling).
  Verify that the transaction types and mediums are correctly defined for