How To Fix AC491 - The key for rule &1 is in the SAP name range

AC491 - Overview

• Message type: E = Error

• Message class: AC - Error messages from Asset Customizing

• Message number: 491

• Message text: The key for rule &1 is in the SAP name range

What causes this issue?

The key you entered for rule &V1& is in the SAP name range.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Enter a key for the rule that is not in the SAP name range of 00 - 89.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AC491 - The key for rule &1 is in the SAP name range ?

  The SAP error message AC491 indicates that there is an issue with the key for a specific rule in the SAP name range. This typically occurs in the context of Asset Accounting (FI-AA) when you are trying to create or modify an asset master record or related configuration.
  
  Cause:
  The error message AC491 is triggered when the key you are trying to use for a specific rule is already reserved or used within the SAP name range. This can happen if:
  
  The key you are trying to use is already assigned to another object or rule in the system.
  There is a naming conflict due to the key being part of the SAP standard naming conventions or reserved names.
  
  
  Solution:
  To resolve the AC491 error, you can take the following steps:
  
  
  Check Existing Keys: Verify if the key you are trying to use is already in use. You can do this by checking the relevant configuration or