How To Fix ET045 - Internal error: Unknown object type &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ET - Translation and maintenance language

• Message number: 045

• Message text: Internal error: Unknown object type &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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message ET045 - Internal error: Unknown object type &1 ?

  The SAP error message ET045, which states "Internal error: Unknown object type &1," typically indicates that the system has encountered an unexpected object type that it does not recognize or cannot process. This error can occur in various contexts, such as during data processing, report generation, or when executing certain transactions.
  Causes:
  
  Invalid Object Type: The object type being referenced may not exist in the system or may have been deleted or not properly defined.
  Configuration Issues: There may be configuration issues in the system that lead to the recognition of an invalid object type.
  Custom Development: If there are custom programs or enhancements, they may be referencing an object type that is not defined or is incorrectly implemented.
  Transport Issues: If objects were transported from one system to another, there may be inconsistencies or missing objects in the target system.
  Data Corruption: There could be corruption in the database or in the metadata that defines object types.
  
  Solutions:
  
  Check Object Type: Verify the object type referenced in the error message. Ensure that it exists and is correctly defined in the system.
  Review Custom Code: If the error occurs in a custom program, review the code to ensure that it is correctly handling object types and that all necessary objects are defined.
  System Configuration: Check the configuration settings related to the object types in question. Ensure that all necessary settings are in place.
  Transport Management: If the issue arose after a transport, check the transport logs and ensure that all objects were successfully transported and are available in the target system.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal. There may be specific notes addressing this error or related issues.
  Debugging: If you have access to debugging tools, you can debug the program or transaction that triggered the error to identify the exact point of failure.
  Consult SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance.
  
  Related Information:
  
  SAP Notes: Always check for SAP Notes related to the error message ET045. These notes may provide specific fixes or workarounds.
  Transaction Codes: Depending on where the error occurs, you may want to look into transaction codes related to the specific module or functionality you are working with.
  System Logs: Review system logs (transaction SLG1) for additional context or related error messages that may provide more insight into the issue.
  
  By following these steps, you should be able to diagnose and resolve the ET045 error in your SAP system.