How To Fix LT151 - Mixed storage & not allowed in bulk storage with SU mgmt

SAP Error Message - Details

• Message type: E = Error

• Message class: LT - LE-WM: View or Table Maintenance Error Messages

• Message number: 151

• Message text: Mixed storage & not allowed in bulk storage with SU mgmt

What causes this issue?

In a SU bulk storage area, it is only possible to store full
homogeneous storage units. Partial storage units or storage units with
mixed storage are not possible.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message LT151 - Mixed storage & not allowed in bulk storage with SU mgmt ?

  The SAP error message LT151 indicates that there is a mixed storage issue in a bulk storage area when using Storage Unit (SU) management. This error typically arises when you attempt to store different materials or batches in the same storage bin that is configured for bulk storage with SU management, which does not allow for mixed storage.
  Cause:
  
  Mixed Storage Configuration: The storage type is configured to not allow mixed storage, meaning that only one type of material or batch can be stored in a specific storage bin.
  Storage Unit Management: When using SU management, each storage unit is treated as a unique entity, and the system enforces strict rules about what can be stored together.
  Material Master Settings: The material master record may have settings that conflict with the storage type's configuration, leading to this error when trying to store a different material or batch in the same bin.
  
  Solution:
  
  
  Check Storage Type Configuration:
  
  Go to the configuration settings for the storage type in the SAP system (Transaction code: SPRO).
  Navigate to the relevant path: Logistics Execution > Warehouse Management > Master Data > Define Storage Types.
  Ensure that the storage type is set to allow mixed storage if that is desired. If not, ensure that you are only trying to store the same material or batch.
  
  
  
  Review Material Master Data:
  
  Check the material master records for the materials you are trying to store. Ensure that they are compatible with the storage type settings.
  Transaction code: MM03 can be used to view material master data.
  
  
  
  Use Different Storage Bins:
  
  If mixed storage is not allowed, consider using different storage bins for different materials or batches. This may involve adjusting your warehouse layout or storage strategy.
  
  
  
  Adjust Warehouse Management Settings:
  
  If your business process allows for mixed storage, you may need to adjust the warehouse management settings to accommodate this. This could involve changing the configuration of the storage type or the handling of storage units.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or consult with your SAP support team for specific guidance related to your system configuration and business processes.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SPRO (Customizing)
  MM03 (Material Master Display)
  LT01 (Create Transfer Order)
  LT10 (Transfer Order Confirmation)
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on configuration.
  
  
  Training and Documentation: Ensure that warehouse staff are trained on the implications of SU management and mixed storage policies to prevent future occurrences of this error.
  
  
  By following these steps, you should be able to resolve the LT151 error and ensure that your warehouse operations run smoothly.