How To Fix /PM0/ABO_API_MESSAGE021 - Unknown combination object type/object category &1/&2

SAP Error Message - Details

• Message type: E = Error

• Message class: /PM0/ABO_API_MESSAGE -

• Message number: 021

• Message text: Unknown combination object type/object category &1/&2

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 /PM0/ABO_API_MESSAGE021 - Unknown combination object type/object category &1/&2 ?

  The SAP error message /PM0/ABO_API_MESSAGE021 Unknown combination object type/object category &1/&2 typically indicates that there is an issue with the object type and object category being used in a particular operation or transaction within the SAP system. This error is often encountered in the context of Asset Management or Project Management modules, where specific object types and categories are expected.
  Cause:
  
  Invalid Object Type/Category: The object type or category specified in the transaction does not exist or is not recognized by the system.
  Configuration Issues: There may be a configuration issue in the system where the object types and categories have not been properly defined or activated.
  Data Entry Errors: There could be a typo or incorrect entry in the fields where the object type and category are specified.
  Missing Authorizations: The user may not have the necessary authorizations to access the specified object type or category.
  
  Solution:
  
  Check Object Type/Category: Verify that the object type and category you are using are valid and exist in the system. You can do this by checking the configuration settings in the relevant module (e.g., Asset Management).
  Review Configuration: If you have access, review the configuration settings for object types and categories in the SAP system. Ensure that they are correctly defined and activated.
  Correct Data Entry: Double-check the entries you made for any typos or incorrect values. Ensure that the values match the expected formats and options.
  Consult Documentation: Refer to SAP documentation or help resources for the specific module you are working with to understand the valid combinations of object types and categories.
  User Authorizations: Ensure that the user has the necessary authorizations to access the object type and category. If not, contact your SAP security administrator to request the appropriate access.
  Contact SAP Support: If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. Provide them with the error message details and the context in which it occurred.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may want to check transaction codes related to Asset Management (e.g., AS01, AS02) or Project Management (e.g., CJ20N).
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide additional troubleshooting steps.
  Community Forums: Consider checking SAP community forums or discussion boards for similar issues faced by other users and their solutions.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.