How To Fix MC756 - Field &-& from join condition does not exist

MC756 - Overview

• Message type: E = Error

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

• Message number: 756

• Message text: Field &-& from join condition does not exist

What causes this issue?

A join condition refers to a field which does not exist.

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?

You should only define existing fields of the base tables for join
conditions.

Error message extract from SAP system. Copyright SAP SE.

MC756 - Details

• The SAP error message MC756 ("Field &-& from join condition does not exist") typically occurs in the context of SAP's Material Management (MM) or other modules that involve data extraction and reporting, particularly when working with InfoObjects, DataSources, or queries in SAP BW (Business Warehouse).
  
  Cause:
  This error usually arises due to one of the following reasons:
  
  
  Field Mismatch: The field specified in the join condition does not exist in the underlying data source or InfoObject. This could be due to a typo, a field that has been removed, or a field that has not been activated.
  
  
  DataSource Changes: If the DataSource has been modified (e.g., fields added or removed) after the query or report was created, it may lead to this error.
  
  
  Incorrect Join Conditions: The join condition specified in the query or report may reference fields that are not part of the tables being joined.
  
  
  Transport Issues: If the query or report was transported