How To Fix SD_CDS_READ_API029 - Field path generation: Invalid stack asc_pos &1: &2 = &3

SAP Error Message - Details

• Message type: E = Error

• Message class: SD_CDS_READ_API -

• Message number: 029

• Message text: Field path generation: Invalid stack asc_pos &1: &2 = &3

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SD_CDS_READ_API029 - Field path generation: Invalid stack asc_pos &1: &2 = &3 ?

  The SAP error message SD_CDS_READ_API029 with the description "Field path generation: Invalid stack asc_pos &1: &2 = &3" typically occurs in the context of SAP S/4HANA, particularly when dealing with Core Data Services (CDS) views or when accessing data through the SAP Fiori interface.
  Cause:
  This error generally indicates that there is an issue with the data model or the way the CDS view is defined. The specific components of the error message can provide clues:
  
  asc_pos: This refers to the position in the stack where the error occurred.
  &1, &2, &3: These placeholders represent specific values that can help identify the exact nature of the problem.
  
  Common causes include:
  
  Incorrect Field Mapping: The fields defined in the CDS view may not be correctly mapped or may not exist in the underlying database tables.
  Data Inconsistencies: There may be inconsistencies in the data that the CDS view is trying to access, such as missing or null values.
  Changes in Data Model: If there have been recent changes to the underlying data model (e.g., changes in table structures, field names, etc.), the CDS view may not be updated accordingly.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access certain fields or tables, leading to this error.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the CDS View Definition:
  
  Review the definition of the CDS view to ensure that all fields are correctly defined and mapped.
  Ensure that the fields referenced in the CDS view exist in the underlying tables.
  
  
  
  Validate Data Consistency:
  
  Check the underlying tables for any inconsistencies or missing data that could be causing the error.
  Run consistency checks on the data if available.
  
  
  
  Review Recent Changes:
  
  If there have been recent changes to the data model, ensure that the CDS view has been updated to reflect those changes.
  If necessary, regenerate the CDS view or re-activate it.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to access the fields and tables involved in the CDS view.
  
  
  
  Debugging:
  
  If you have access to the development environment, you can debug the CDS view execution to pinpoint the exact location of the error.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes or updates related to this error message. There may be specific patches or updates that address this issue.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  SAP Documentation: Review the official SAP documentation on CDS views and data modeling in S/4HANA for best practices and guidelines.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can provide insights or solutions.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE80 (Object Navigator), and others that can help you analyze and troubleshoot the issue.
  
  By following these steps, you should be able to identify and resolve the cause of the SD_CDS_READ_API029 error in your SAP environment.