How To Fix AM403 - Key & for the prefix is not defined

AM403 - Overview

• Message type: E = Error

• Message class: AM - Business Address Services

• Message number: 403

• Message text: Key & for the prefix is not defined

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 AM403 - Key & for the prefix is not defined ?

  The SAP error message AM403 ("Key & for the prefix is not defined") typically occurs in the Asset Accounting (FI-AA) module when the system is unable to find a specific key that is required for processing asset transactions. This error can arise due to various reasons, such as configuration issues or missing entries in the relevant tables.
  
  Cause:
  
  Missing Configuration: The error often indicates that the system is missing a configuration for the asset class or the prefix that is being used in the transaction.
  Incorrect Asset Class: The asset class may not be properly defined or may not have the necessary keys associated with it.
  Customizations: If there are custom developments or modifications in the system, they may not be aligned with the standard configurations.
  Data Entry Errors: There may be a typo or incorrect entry in the asset master data or transaction data.
  
  
  Solution:
  
  
  Check Asset Class Configuration:
  
  Go to the configuration settings for Asset Accounting