How To Fix SCDS_ATC_SYNTREM002 - Wrong key order. All keys must be defined before other non-key elements

SAP Error Message - Details

• Message type: E = Error

• Message class: SCDS_ATC_SYNTREM - Message class for CDS remote syntax ATC check

• Message number: 002

• Message text: Wrong key order. All keys must be defined before other non-key elements

What causes this issue?

Starting from SAP_BASIS release 7.50 an incompatible change in the CDS
Parser was introduced: all key elements must be defined before other
non-key elements.

How to fix this error?

Move all key elements to the top of the select list and activate the CDS
view.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SCDS_ATC_SYNTREM002 - Wrong key order. All keys must be defined before other non-key elements ?

  The SAP error message SCDS_ATC_SYNTREM002 indicates that there is an issue with the order of key definitions in a data structure, typically in the context of ABAP Dictionary objects such as database tables or structures. This error occurs when non-key fields are defined before all key fields in the definition of a table or structure.
  Cause:
  The error is caused by the incorrect ordering of fields in the definition of a table or structure. In SAP ABAP, all key fields must be defined before any non-key fields. If the key fields are placed after non-key fields, the system raises this error to enforce the correct structure.
  Solution:
  To resolve this error, you need to adjust the order of the fields in your table or structure definition. Follow these steps:
  
  Open the Data Dictionary (SE11): Go to transaction SE11 in your SAP system.
  Locate the Table/Structure: Enter the name of the table or structure that is causing the error and click on "Display" or "Change."
  Check Field Order: Look at the list of fields defined for the table or structure. Ensure that all key fields are listed first, followed by non-key fields.
  Reorder Fields: If you find that non-key fields are defined before key fields, you need to move the key fields to the top of the list. You can do this by selecting the key fields and using the move up/down options.
  Save and Activate: After making the necessary changes, save your work and activate the table or structure.
  
  Related Information:
  
  Key Fields: Key fields are used to uniquely identify records in a database table. They are essential for indexing and ensuring data integrity.
  Non-Key Fields: Non-key fields are additional fields that provide more information about the records but do not contribute to the uniqueness of the records.
  ABAP Dictionary: The ABAP Dictionary is a central repository in SAP that defines the structure of database objects, including tables, views, data elements, domains, and more.
  Best Practices: Always define key fields first when creating or modifying tables and structures to avoid this error and ensure proper data organization.
  
  By following these steps and understanding the structure of your data definitions, you should be able to resolve the SCDS_ATC_SYNTREM002 error effectively.