How To Fix ACM320 - DDIC API error. Cannot get header data for entity: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ACM - Message-Class for all ACM functions/exceptions

• Message number: 320

• Message text: DDIC API error. Cannot get header data for entity: &1

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ACM320 - DDIC API error. Cannot get header data for entity: &1 ?

  The SAP error message ACM320, which states "DDIC API error. Cannot get header data for entity: &1," typically indicates an issue with the Data Dictionary (DDIC) API when trying to retrieve header data for a specific entity. This error can arise due to various reasons, including issues with the underlying data model, configuration problems, or inconsistencies in the database.
  Possible Causes:
  
  Missing or Inconsistent Data: The entity specified in the error message may not have the required header data in the database, or there may be inconsistencies in the data.
  Authorization Issues: The user may not have the necessary authorizations to access the data for the specified entity.
  Configuration Errors: There may be configuration issues in the application that are preventing the retrieval of the header data.
  Transport Issues: If the system has recently undergone a transport, there may be inconsistencies between the development and production environments.
  Database Issues: There could be underlying database issues, such as corruption or connectivity problems.
  
  Solutions:
  
  Check Data Consistency: Verify that the data for the specified entity exists and is consistent. You can use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to check the relevant tables.
  Review Authorizations: Ensure that the user has the necessary authorizations to access the data. You can check this using transaction SU53 to analyze authorization failures.
  Configuration Review: Review the configuration settings related to the entity in question. Ensure that all necessary settings are correctly configured.
  Transport Check: If the error occurred after a transport, check if all necessary objects were transported correctly. You may need to re-transport or adjust the configuration.
  Database Check: If you suspect database issues, you may need to run database consistency checks or consult with your database administrator to ensure that the database is functioning correctly.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that resolve the issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11, SE16, SU53, and ST22 (Dump Analysis) to help diagnose the issue.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to identify the root cause of the ACM320 error and implement an appropriate solution.