How To Fix AQQIS_CNTRL017 - Note change in join types

SAP Error Message - Details

• Message type: E = Error

• Message class: AQQIS_CNTRL - Join-Control InfoSet

• Message number: 017

• Message text: Note change in join types

What causes this issue?

Changing the tables hierarchy resulted in an adjustment of the join
conditions.

System Response

Some join conditions were converted: from left-outer to inner join or
inner to left-outer join.
The resulting join conditions are now consistent.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AQQIS_CNTRL017 - Note change in join types ?

  The SAP error message AQQIS_CNTRL017, which states "Note change in join types," typically occurs in the context of SAP Query or SAP BW (Business Warehouse) when there is an issue with the way joins are defined in a query or report. This error indicates that there is a mismatch or inconsistency in the join types used in the query definition.
  Cause:
  
  Join Type Mismatch: The error often arises when there is a change in the underlying data model, such as a change in the join type (e.g., from inner join to outer join) that is not reflected in the query definition.
  Data Source Changes: If the data source has been modified (e.g., tables or views have been altered), it may lead to inconsistencies in how the joins are defined.
  Query Definition Issues: The query may have been defined with incompatible join types, or there may be a logical error in how the joins are structured.
  
  Solution:
  
  Review Query Definition: Check the query definition in the SAP Query or BW Query Designer. Ensure that the join types are consistent and appropriate for the data being queried.
  Adjust Join Types: If there have been changes to the underlying data model, update the join types in the query to match the current structure of the data source.
  Recreate the Query: In some cases, it may be easier to recreate the query from scratch, especially if the original query is complex and difficult to troubleshoot.
  Check Data Source: Verify that the data source (tables, views, etc.) is correctly defined and that there are no issues with the data model that could affect the joins.
  Consult Documentation: Refer to SAP documentation or notes related to query design and join types for additional guidance.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context on join types and query design.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Testing: After making changes, test the query thoroughly to ensure that it returns the expected results without errors.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with an SAP technical expert or support for further assistance.