How To Fix CFD_DDIC_ADAPTER021 - Append Adapter: Activation of include structure &1 failed

SAP Error Message - Details

• Message type: E = Error

• Message class: CFD_DDIC_ADAPTER - Custom Fields: CDS Adapter

• Message number: 021

• Message text: Append Adapter: Activation of include structure &1 failed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CFD_DDIC_ADAPTER021 - Append Adapter: Activation of include structure &1 failed ?

  The SAP error message CFD_DDIC_ADAPTER021, which states "Append Adapter: Activation of include structure &1 failed," typically occurs during the activation of a data structure in the Data Dictionary (DDIC) when there is an issue with an append structure. This error can arise due to various reasons, including inconsistencies in the data dictionary, missing dependencies, or issues with the underlying database.
  Causes:
  
  Inconsistent Data Dictionary: There may be inconsistencies in the data dictionary objects, such as tables or structures that are not properly defined or activated.
  Missing Dependencies: The append structure may depend on other structures or tables that are not activated or are in an inconsistent state.
  Database Issues: There could be issues with the underlying database, such as locks or corruption.
  Transport Issues: If the append structure was transported from another system, there may have been issues during the transport process.
  Authorization Issues: The user may not have the necessary authorizations to activate the structure.
  
  Solutions:
  
  Check Activation Logs: Review the activation logs for more detailed error messages that can provide insights into what specifically failed during the activation process.
  Re-activate the Structure: Try to manually activate the include structure again using transaction SE11 (Data Dictionary) or SE14 (Database Utility).
  Check Dependencies: Ensure that all dependent objects (like tables or other structures) are activated and consistent. You can use transaction SE11 to check the status of these objects.
  Clear Buffer: Sometimes, clearing the buffer can help resolve activation issues. You can do this using transaction code SNOTE or by using the program RSDBA_CHECK.
  Transport Request: If the issue is related to a transport request, check the transport logs and ensure that all objects were transported correctly.
  Database Consistency Check: Use transaction SE14 to perform a consistency check on the database objects.
  Authorization Check: Ensure that the user has the necessary authorizations to perform the activation.
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE14 (Database Utility), SE80 (Object Navigator).
  SAP Notes: Check SAP Notes related to the specific error message for any known issues or patches.
  System Logs: Review system logs (transaction SM21) for any related errors that might provide additional context.
  Support: If the issue persists, consider reaching out to SAP support with detailed information about the error, including the context in which it occurred and any relevant logs.
  
  By following these steps, you should be able to identify and resolve the issue causing the CFD_DDIC_ADAPTER021 error in SAP.