How To Fix MC764 - Type conflict in join &-& = &-&

MC764 - Overview

• Message type: E = Error

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

• Message number: 764

• Message text: Type conflict in join &-& = &-&

What causes this issue?

Two fields with different data types or lengths are elements of a join.
Such conditions normally do not make sense.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

This is only a warning message.

How to fix this error?

Check in your own developments whether the join condition was defined
in this way on purpose.

Error message extract from SAP system. Copyright SAP SE.

MC764 - Details

• The SAP error message MC764, which states "Type conflict in join &-& = &-&", typically occurs in the context of data extraction or reporting, particularly when working with InfoObjects in SAP BW (Business Warehouse) or when creating queries in SAP Query Designer. This error indicates that there is a type mismatch between the fields being joined in a query or data model.
  
  Cause:
  
  Data Type Mismatch: The most common cause of this error is that the fields being joined have different data types. For example, one field might be a character type (CHAR) while the other is a numeric type (NUMC).
  Inconsistent Field Definitions: If the fields involved in the join are defined differently in the underlying data sources (e.g., different lengths, formats, or types), this can lead to conflicts.
  Incorrect Join Conditions: The join conditions specified in the query or data model may not be valid due to the type differences.
  
  
  Solution:
  
  Check Data Types: