How To Fix DPR_OBJ_LINK020 - You can only use operative object links for specific object types

SAP Error Message - Details

• Message type: E = Error

• Message class: DPR_OBJ_LINK - Messages for Object Links

• Message number: 020

• Message text: You can only use operative object links for specific object types

What causes this issue?

The operative object link is only available if the interface
<NP>IF_DPR_OBL_OPERATIVE</> is implemented by the proxy class assigned
to the object type (for example, <NP>0PLANTMATERIAL</>). You can view
the proxy class in the <LS>Details</> of the object type.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DPR_OBJ_LINK020 - You can only use operative object links for specific object types ?

  The SAP error message DPR_OBJ_LINK020 indicates that there is an issue with the type of object link you are trying to create in the SAP system, specifically within the context of project management or project-related objects. This error typically arises when you attempt to create an operative object link for an object type that does not support it.
  Cause:
  The error is caused by attempting to link an object (like a project, task, or resource) that is not compatible with the type of link you are trying to establish. In SAP, certain object types can only be linked in specific ways, and if you try to create an operative link for an object type that does not allow it, you will encounter this error.
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Object Types: Verify the object types you are trying to link. Ensure that both the source and target objects are compatible with the type of link you are trying to create. Refer to the SAP documentation or configuration settings to understand which object types can be linked operatively.
  
  
  Use Correct Link Type: If the object types are not compatible for an operative link, consider using a different type of link that is allowed for the objects in question. For example, you might need to use a non-operative link or another appropriate link type.
  
  
  Review Configuration: If you believe the objects should be compatible, check the configuration settings in your SAP system. There may be settings that restrict certain types of links based on the project structure or object types.
  
  
  Consult Documentation: Refer to the SAP Help Portal or specific documentation related to the Project Management (PS) module or the specific application area you are working in. This can provide insights into the rules governing object links.
  
  
  Seek Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert who can provide guidance based on your specific system configuration and requirements.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this error or provide additional context.
  Transaction Codes: Familiarize yourself with transaction codes related to project management, such as CJ20N (Project Builder) or CJ02 (Change Project), where you might be encountering this error.
  Training and Documentation: Consider training resources or documentation that cover project management processes in SAP, as understanding the underlying principles can help prevent similar issues in the future.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.