How To Fix SD_EXPRESSION009 - Illegal stack code (&:&), expected &

SAP Error Message - Details

• Message type: E = Error

• Message class: SD_EXPRESSION - Messages processing AST expressions

• Message number: 009

• Message text: Illegal stack code (&:&), expected &

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 SD_EXPRESSION009 - Illegal stack code (&:&), expected & ?

  The SAP error message SD_EXPRESSION009 with the description "Illegal stack code (&:&), expected &" typically occurs in the context of SAP SD (Sales and Distribution) when there is an issue with the processing of a pricing procedure or condition record. This error indicates that there is an unexpected or malformed expression in the pricing logic, which can be due to various reasons.
  Causes:
  
  Incorrect Pricing Procedure Configuration: The pricing procedure may have been incorrectly configured, leading to invalid expressions or conditions.
  Malformed Condition Records: Condition records may contain invalid or unexpected values that do not conform to the expected format.
  Custom Code Issues: If there are custom enhancements or modifications in the pricing logic, they may introduce errors that lead to this message.
  Data Inconsistencies: Inconsistent or corrupted data in the master data or transaction data can also trigger this error.
  
  Solutions:
  
  
  Check Pricing Procedure:
  
  Review the pricing procedure configuration in transaction V/08. Ensure that all condition types and their sequence are correctly defined.
  Verify that the condition types used in the pricing procedure are valid and properly configured.
  
  
  
  Review Condition Records:
  
  Use transaction VK13 to check the condition records for the relevant condition types. Ensure that they are correctly maintained and do not contain any invalid entries.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the pricing logic to identify where the illegal stack code is being generated. You can use transaction SE80 or SE37 to analyze the relevant function modules or methods.
  
  
  
  Check Custom Code:
  
  If there are any custom enhancements or user exits related to pricing, review them for potential issues. Ensure that they are not introducing errors into the pricing calculation.
  
  
  
  Data Consistency Check:
  
  Perform a data consistency check to ensure that all relevant master data (like customer master, material master, etc.) is correctly maintained and does not have any inconsistencies.
  
  
  
  SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that resolve known issues.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  V/08: Maintain Pricing Procedures
  VK13: Display Condition Records
  SE80: Object Navigator (for debugging)
  SE37: Function Module
  
  
  
  SAP Support: If the issue cannot be resolved internally, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including the context in which it occurs and any relevant configuration details.
  
  
  By following these steps, you should be able to identify and resolve the cause of the SD_EXPRESSION009 error in your SAP system.