How To Fix WN678 - Maintenance of plant &1 is incomplete; update fields for customer &2

WN678 - Overview

• Message type: E = Error

• Message class: WN - Plant master data maintenance (integrated)

• Message number: 678

• Message text: Maintenance of plant &1 is incomplete; update fields for customer &2

What causes this issue?

You want to assign a business partner to plant &V1& either in plant
maintenance or by means of distribution.
The data that links the plant, customer, and supplier master data has
not been persisted in the database. The persistence of this data is the
last step in plant maintenance. All other data has been stored.

System Response

The system cannot update the master data for customer &V2&; therefore,
it is not possible to assign a business partner to the plant.

How to fix this error?

Use the
<DS:TRAN.MDS_PPO2>Postprocessing Desktop</> to evaluate any errors that
were detected during the check of the role-specific data. Correct these
errors to complete maintenance of the plant.

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 WN678 - Maintenance of plant &1 is incomplete; update fields for customer &2 ?

  The SAP error message WN678 indicates that there is incomplete maintenance data for a specific plant and customer combination. This typically occurs in the context of customer master data or material master data, where certain required fields have not been filled out or updated correctly.
  
  Cause:
  
  Incomplete Data: The primary cause of this error is that certain mandatory fields for the specified plant and customer have not been maintained. This could include fields related to sales data, shipping data, or other relevant information that is necessary for processing transactions.
  
  Configuration Issues: There may be configuration settings in the system that require specific data to be maintained for certain plants or customers.
  Data Migration Issues: If data was migrated from another system or updated in bulk, some records may not have been fully populated.
  
  
  Solution:
  
  
  Check Customer Master Data:
  
  Go to the transaction code XD02 (Change Customer) or VD02 (Change Customer for Sales Area).
  Enter the customer number and