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

/PM0/ABO_API_MESSAGE021 - Overview

• 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.

/PM0/ABO_API_MESSAGE021 - Details

• 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