How To Fix CL_SADL_GW_MDE_MSGJ000 - Key & already exists

CL_SADL_GW_MDE_MSGJ000 - Overview

• Message type: E = Error

• Message class: CL_SADL_GW_MDE_MSGJ - Annotation Object Messages

• Message number: 000

• Message text: Key & already exists

Self-Explanatory Message

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CL_SADL_GW_MDE_MSGJ000 - Details

• The SAP error message CL_SADL_GW_MDE_MSGJ000 with the description "Key & already exists" typically occurs in the context of the SAP Gateway and the SADL (Service Adaptation Definition Language) framework. This error indicates that there is an attempt to create or insert an entity with a key that already exists in the database.
  
  Cause:
  
  
  Duplicate Key Insertion: The most common cause of this error is that the application is trying to create a new record with a primary key that already exists in the database. This can happen due to:
  
  A programming error where the key is not being generated correctly.
  A race condition where multiple processes are trying to create the same record simultaneously.
  Incorrect data being sent from the frontend or an external system.
  
  
  
  Data Consistency Issues: If there are inconsistencies in the data being processed, such as incorrect mappings or transformations, it can lead to attempts to insert duplicate keys.
  
  
  
  Solution:
  
  
  Check for Existing Records: Before