How To Fix SDDL_PARSER_MSG045 - This element is not allowed in ON conditions in associations (class &)

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 045

• Message text: This element is not allowed in ON conditions in associations (class &)

What causes this issue?

In the ON condition of an association, a component was found that is not
yet supported by CDS at this position.

System Response

,,Syntax error during use of an association in a path expression

How to fix this error?

You can correct the error by reactivating the CDS view with the
assoociation definition. If errors occur during reactivation of the CDS
view, these must be rectified first.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG045 - This element is not allowed in ON conditions in associations (class &) ?

  The SAP error message SDDL_PARSER_MSG045 indicates that there is an issue with the ON conditions in associations within the context of the SAP Data Dictionary or the Business Object Model. This error typically arises when an invalid element is used in the ON condition of an association definition.
  Cause:
  The error occurs when:
  
  An element that is not allowed in the ON condition is referenced. This could be due to incorrect syntax or the use of an unsupported field or attribute.
  The association is defined incorrectly, possibly due to a misunderstanding of the data model or the relationships between entities.
  The ON condition is trying to use fields that are not part of the associated entities or are not valid for the type of association being defined.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Review the Association Definition:
  
  Check the association definition in the relevant data model or entity. Ensure that the fields used in the ON condition are valid and belong to the associated entities.
  
  
  
  Correct the ON Condition:
  
  Modify the ON condition to use only the allowed fields. Ensure that the fields referenced are part of the primary keys or valid attributes of the entities involved in the association.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for the specific version you are using. This can provide insights into the correct syntax and allowed elements for ON conditions in associations.
  
  
  
  Check for Updates:
  
  Ensure that your SAP system is up to date. Sometimes, bugs or limitations in earlier versions can lead to such errors, and updates may provide fixes or enhancements.
  
  
  
  Testing:
  
  After making changes, test the association to ensure that it works as expected without triggering the error.
  
  
  
  Seek Help from SAP Community:
  
  If you are unable to resolve the issue, consider reaching out to the SAP community forums or support for assistance. Provide details about the association and the specific ON condition that is causing the error.
  
  
  
  Related Information:
  
  SAP Data Dictionary: Understanding the structure and relationships of your data model is crucial. Familiarize yourself with how associations work in SAP.
  Business Object Model: Review the business object model to ensure that the associations are correctly defined according to business requirements.
  SAP Notes and Knowledge Base Articles: Search for any relevant SAP Notes or articles that might address similar issues or provide additional context.
  
  By following these steps, you should be able to identify and correct the cause of the SDDL_PARSER_MSG045 error in your SAP environment.