How To Fix MC815 - Field &-&: Type conflict in join condition

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 815

• Message text: Field &-&: Type conflict in join condition

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC815 - Field &-&: Type conflict in join condition ?

  The SAP error message MC815, which states "Field &-&: Type conflict in join condition," typically occurs in the context of SAP's reporting and data extraction tools, particularly when working with queries or InfoSets in the SAP BW (Business Warehouse) or SAP ERP systems. This error indicates that there is a mismatch in the data types of the fields being used in a join condition.
  
  Cause:
  The error is caused by one of the following reasons:
  
  Data Type Mismatch: The fields being joined have different data types (e.g., one is a character field while the other is a numeric field).
  Field Length Differences: Even if the data types are the same, differing lengths can also cause issues.
  Incorrect Field Mapping: The fields may not be correctly mapped in the join condition, leading to type conflicts.
  Inconsistent Data Models: Changes in the underlying data model or structure that have not been reflected in the query or InfoSet.
  
  
  Solution:
  To resolve