How To Fix MC713 - &-& is not a semantic foreign key

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 713

• Message text: &-& is not a semantic foreign key

What causes this issue?

You can only link two tables to a view using semantic foreign keys.
These are foreign keys whose type and cardinality is known.

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?

Enter the missing definitions for the foreign key of the specified
table and activate the table.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC713 - &-& is not a semantic foreign key ?

  The SAP error message MC713 indicates that there is an issue with a foreign key relationship in the context of a data model or a database table. Specifically, the message states that a certain field (represented by & in the error message) is not recognized as a semantic foreign key. This typically occurs in the context of data extraction or reporting, particularly when working with InfoObjects in SAP BW (Business Warehouse) or similar data modeling scenarios.
  Cause:
  
  Incorrect Foreign Key Definition: The field in question may not be defined correctly as a foreign key in the data model. This could be due to a missing or incorrect relationship between the tables or InfoObjects.
  Data Type Mismatch: The data types of the fields involved in the foreign key relationship may not match, leading to the inability to establish a valid foreign key.
  Missing Data: The data that is supposed to establish the foreign key relationship may be missing or not populated correctly in the source tables.
  Modeling Errors: There may be errors in the data model configuration, such as incorrect settings in the InfoProvider or InfoObject.
  
  Solution:
  
  Check Foreign Key Definition: Review the foreign key relationships in the data model. Ensure that the field is correctly defined as a foreign key and that it points to the correct primary key in the related table or InfoObject.
  Verify Data Types: Ensure that the data types of the foreign key and primary key fields match. If they do not, you may need to adjust the data types or perform necessary transformations.
  Data Validation: Check the source data to ensure that all necessary records are present and that there are no missing values that would prevent the foreign key relationship from being established.
  Model Configuration: Review the configuration of the InfoProvider or InfoObject to ensure that all settings are correct and that the foreign key relationships are properly defined.
  Rebuild or Refresh: If changes are made to the data model or the underlying data, consider rebuilding or refreshing the data model to ensure that the changes take effect.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance or patches related to the error message MC713. SAP frequently updates its documentation and provides solutions for known issues.
  Data Modeling Documentation: Review SAP documentation on data modeling, particularly in the context of BW or HANA, to understand best practices for defining foreign keys and relationships.
  Community Forums: Engage with SAP community forums or support channels where other users may have encountered similar issues and can provide insights or solutions.
  
  By following these steps, you should be able to identify the root cause of the MC713 error and implement a solution to resolve it.