How To Fix SDDL_PARSER_MSG157 - No annotation "@Environment.systemField: #CLIENT" for client parameter

SDDL_PARSER_MSG157 - Overview

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 157

• Message text: No annotation "@Environment.systemField: #CLIENT" for client parameter

What causes this issue?

If you use annotations @ClientHandling.algorithm: #SESSION_VARIABLE" and
"@ClientHandling.type: #CLIENT_DEPENDENT", there must be a parameter
with type "abap.clnt" and the annotation "@Environment.systemField:
#CLIENT" must be assigned to this parameter.

How to fix this error?

Add the annotation "@Environment.systemField: #CLIENT" to the parameter
with type "abap.clnt", or define a new parameter with type "abap.clnt"
with annotation "@Environment.systemField: #CLIENT".

Error message extract from SAP system. Copyright SAP SE.

SDDL_PARSER_MSG157 - Details

• The SAP error message SDDL_PARSER_MSG157 indicates that there is a missing annotation for the client parameter in your SAP application. This error typically arises in the context of SAP's OData services or when working with the SAP Cloud Application Programming (CAP) model, where annotations are used to define metadata for various elements.
  
  Cause:
  The specific cause of this error is that the system is expecting an annotation for the client parameter, specifically the @Environment.systemField: #CLIENT annotation, which is used to indicate that the client field is a system field that should be handled in a specific way. The absence of this annotation means that the system cannot properly interpret or manage the client context for the operation being performed.
  
  Solution:
  To resolve this error, you need to ensure that the client parameter is properly annotated in your service definition. Here are the steps you can take:
  
  
  Check Your Service Definition: Review the service definition (e.g.,