How To Fix MC284 - Field &-&: (foreign key dependency to table & missing)

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 284

• Message text: Field &-&: (foreign key dependency to table & missing)

What causes this issue?

No foreign key has yet been maintained for the specified field.
However, the system expects this here, e.g. in order to connect primary
tables and one of the secondary tables of an aggregate by foreign
keys.

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?

Go to the single field maintenance screen of the corresponding table.
Position the cursor to the field for which the foreign key is to be
maintained and go to the foreign key maintenance screen by selecting
the function <LS>Foreign key</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC284 - Field &-&: (foreign key dependency to table & missing) ?

  The SAP error message MC284 indicates that there is a foreign key dependency issue related to a specific table in the SAP system. This error typically arises when a record is being processed that references a key in another table, but that key does not exist in the referenced table. Here’s a breakdown of the cause, potential solutions, and related information for this error:
  
  Cause:
  
  
  Missing Data: The most common cause is that the data you are trying to enter or process references a key that does not exist in the related table. For example, if you are trying to create a material master record that references a plant that does not exist in the plant table.
  
  
  Data Inconsistency: There may be inconsistencies in the data due to previous deletions or updates that did not maintain referential integrity.
  
  
  
  Configuration Issues: Sometimes, the configuration settings in the system may not be set up correctly, leading