How To Fix W_CB189 - List and supplier exclude one another

SAP Error Message - Details

• Message type: E = Error

• Message class: W_CB -

• Message number: 189

• Message text: List and supplier exclude one another

Self-Explanatory Message

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• What is the cause and solution for SAP error message W_CB189 - List and supplier exclude one another ?

  SAP Error Message:
  
  W_CB189 - List and supplier exclude one another
  
  Cause:
  This warning message occurs in SAP when you try to maintain or use a purchasing info record or source list where both a supplier and a list (such as a source list or quota arrangement) are specified in a way that conflicts or excludes each other.
  In other words, the system detects that the combination of a supplier and a list entry is logically inconsistent or not allowed. For example, if a source list entry is maintained for a material and plant, and you try to assign a supplier directly in a way that conflicts with the source list, this warning appears.
  
  Explanation:
  
  Source List: A source list defines approved sources of supply for a material in a plant for a certain period.
  Supplier: The vendor or supplier assigned to supply the material.
  The system expects either a source list entry or a direct supplier assignment, but not both in conflicting ways.
  This message warns that the system cannot process both simultaneously because they exclude each other logically.
  
  
  Solution:
  
  
  Check the Source List and Supplier Assignments:
  
  Go to transaction ME01 (Maintain Source List) and verify the source list entries for the material and plant.
  Check if the supplier you are trying to assign is already maintained in the source list or if there is a conflicting entry.
  
  
  
  Adjust the Entries:
  
  If you want to use a source list, ensure that the supplier is correctly maintained there and do not assign the supplier separately in a conflicting manner.
  If you want to assign a supplier directly (e.g., in the purchasing info record), ensure that the source list does not restrict or exclude this supplier.
  
  
  
  Remove Conflicting Entries:
  
  Delete or adjust the source list entries or supplier assignments so that they do not conflict.
  For example, if the source list excludes a supplier, either remove the exclusion or do not assign that supplier directly.
  
  
  
  Check Validity Periods:
  
  Ensure that the validity periods of the source list and supplier assignments do not overlap in a conflicting way.
  
  
  
  
  Related Information:
  
  
  Transactions:
  
  ME01 - Maintain Source List
  ME11 - Create Purchasing Info Record
  ME12 - Change Purchasing Info Record
  ME13 - Display Purchasing Info Record
  
  
  
  SAP Notes and Documentation:
  
  Check SAP OSS notes related to source list and supplier assignment conflicts.
  Review SAP Help Portal documentation on Source Lists and Purchasing Info Records.
  
  
  
  Business Process:
  
  Source lists are used to enforce procurement from approved suppliers.
  Purchasing info records link materials and suppliers with conditions.
  Conflicts arise when both are maintained inconsistently.
  
  
  
  
  Summary:
  The warning W_CB189 indicates a conflict between supplier assignment and source list entries. To resolve it, review and align your source list and supplier assignments so that they do not exclude each other. This ensures consistent and valid procurement data in SAP.
  
  If you need further assistance, please provide the context of the transaction or process where this message appears.