How To Fix MC676 - Relationship structure of & & inconsistent

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 676

• Message text: Relationship structure of & & inconsistent

What causes this issue?

The foreign key relationship between the base tables of a view or a
lock object could not be read.
There is probably an inconsistency because of subsequent foreign key
modifications.

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?

Check whether the foreign keys between the base tables are still
correctly defined.
If this is the case, save the table relationships in the view or lock
definition again and activate the object again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC676 - Relationship structure of & & inconsistent ?

  The SAP error message MC676, which states "Relationship structure of & & inconsistent," typically occurs in the context of Material Management (MM) or Production Planning (PP) modules when there is an inconsistency in the relationship structure of a material or a bill of materials (BOM). This inconsistency can arise from various reasons, such as incorrect data entries, missing relationships, or issues during data migration.
  Causes:
  
  Inconsistent BOM Data: The BOM may have been altered, and the relationships between components and the parent material are not correctly defined.
  Missing or Incorrect Relationships: There may be missing links between materials or incorrect assignment of components in the BOM.
  Data Migration Issues: If data was migrated from another system, inconsistencies may have been introduced during the transfer.
  Changes in Material Master: Changes in the material master data that are not reflected in the BOM can lead to inconsistencies.
  Versioning Issues: If multiple versions of a BOM exist, there may