How To Fix /IWBEP/CM_MGW_RT163 - Tag '&1' already exists. Application programming error

/IWBEP/CM_MGW_RT163 - Overview

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 163

• Message text: Tag '&1' already exists. Application programming error

Self-Explanatory Message

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/IWBEP/CM_MGW_RT163 - Details

• The SAP error message /IWBEP/CM_MGW_RT163 with the description "Tag '&1' already exists. Application programming error" typically occurs in the context of SAP Gateway and OData services. This error indicates that there is an attempt to create a tag in the response that already exists, which violates the uniqueness constraint for tags in the OData response.
  Causes:
  
  Duplicate Tags: The most common cause is that the OData service is trying to add a tag to the response that has already been added. This can happen if the service is incorrectly configured or if there is a bug in the implementation.
  Incorrect Data Model: If the data model or the metadata definition has issues, it may lead to the generation of duplicate tags.
  Service Implementation Errors: Errors in the implementation of the service methods (e.g., GET, POST, etc.) can lead to this issue, especially if the logic for generating tags is flawed.
  Caching Issues: Sometimes, caching mechanisms