How To Fix MDG_MDF312 - &1 is a delta node; assignment not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_MDF - Master Data: Messages

• Message number: 312

• Message text: &1 is a delta node; assignment not possible

What causes this issue?

&v1& is a delta node of &v2&. Therefore, this node cannot be used
simultaneously in other places in hierarchies of the same
characteristic.

System Response

It is not possible to save.

How to fix this error?

Delete this node, or assign another delta node to &v2&.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MDG_MDF312 - &1 is a delta node; assignment not possible ?

  The SAP error message MDG_MDF312 indicates that you are trying to assign a delta node in a Master Data Governance (MDG) context, but the assignment is not possible. This typically occurs when you are working with hierarchical data structures, such as organizational units, and you attempt to assign a node that is not eligible for assignment due to its delta status.
  Cause:
  
  Delta Node: The node you are trying to assign is marked as a delta node. Delta nodes are typically used to represent changes or variations in a hierarchy and may not be eligible for certain operations, such as assignments.
  Hierarchy Constraints: The structure of the hierarchy may impose constraints that prevent the assignment of delta nodes.
  Data Integrity Rules: There may be specific data integrity rules defined in your MDG configuration that restrict the assignment of certain types of nodes.
  
  Solution:
  
  Check Node Status: Verify the status of the node you are trying to assign. Ensure that it is not marked as a delta node if you intend to perform an assignment.
  Review Hierarchical Structure: Examine the hierarchical structure to ensure that the node you are trying to assign is appropriate for the intended parent node.
  Adjust Configuration: If necessary, adjust the configuration settings in MDG to allow for the assignment of delta nodes, if that aligns with your business requirements.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on handling delta nodes in your version of MDG.
  Error Logs: Check the error logs for additional details that may provide insight into why the assignment is failing.
  
  Related Information:
  
  MDG Configuration: Understanding the configuration settings in MDG related to data models and hierarchies can help in troubleshooting this error.
  SAP Notes: Look for relevant SAP Notes that may address this specific error or provide updates and patches that could resolve the issue.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed, and solutions shared.
  
  If the problem persists after trying the above solutions, consider reaching out to your SAP support team or consulting with an SAP expert who specializes in MDG for further assistance.