How To Fix AXT_MODEL151 - Context substitution &1 is unknown

SAP Error Message - Details

• Message type: E = Error

• Message class: AXT_MODEL -

• Message number: 151

• Message text: Context substitution &1 is unknown

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 AXT_MODEL151 - Context substitution &1 is unknown ?

  The SAP error message AXT_MODEL151, which states "Context substitution &1 is unknown," typically occurs in the context of SAP Analytics Cloud (SAC) or SAP BW/4HANA when there is an issue with the context substitution in a model or story. This error indicates that the system is unable to recognize or find the specified context substitution variable.
  Causes:
  
  Undefined Context Substitution: The context substitution variable referenced in the model or story is not defined or does not exist.
  Typographical Errors: There may be a typo in the name of the context substitution variable.
  Model Configuration Issues: The model may not be properly configured to include the context substitution.
  Data Source Changes: Changes in the underlying data source or model structure that affect the context substitution.
  Versioning Issues: If the model or story has been updated, the context substitution may not have been updated accordingly.
  
  Solutions:
  
  
  Check Context Substitution Definition:
  
  Go to the model or story where the error occurs and verify that the context substitution variable is defined correctly.
  Ensure that the variable name matches exactly, including case sensitivity.
  
  
  
  Review Model Configuration:
  
  Open the model in the SAP Analytics Cloud and check the settings for context substitutions.
  Ensure that the context substitution is properly configured and linked to the relevant dimensions or measures.
  
  
  
  Correct Typographical Errors:
  
  Double-check for any typographical errors in the variable name within the model or story.
  
  
  
  Update or Recreate Context Substitution:
  
  If the context substitution is missing or incorrect, consider creating a new context substitution variable or updating the existing one.
  
  
  
  Check Data Source:
  
  If there have been changes to the data source, ensure that the model is still compatible with the data structure and that the context substitution is still valid.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or community forums for additional guidance on context substitutions and troubleshooting.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  SAP Analytics Cloud Documentation: Review the official SAP documentation for detailed information on context substitutions and model configurations.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and how they resolved them.
  Release Notes: Check the release notes for any updates or changes related to context substitutions in the version of SAP you are using.
  
  By following these steps, you should be able to identify and resolve the issue related to the AXT_MODEL151 error message.