How To Fix CK151 - Internal error: Material & & has no lot size

SAP Error Message - Details

• Message type: E = Error

• Message class: CK - Product Costing Messages

• Message number: 151

• Message text: Internal error: Material & & has no lot size

What causes this issue?

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

How to fix this error?

Notify your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CK151 - Internal error: Material & & has no lot size ?

  The SAP error message CK151 indicates that there is an internal error related to the material not having a defined lot size. This can occur during various processes, such as when trying to perform a cost estimate or when executing a material valuation.
  Cause:
  
  Missing Lot Size Configuration: The material in question does not have a lot size defined in its material master data. Lot size is essential for determining how quantities are managed and valued in inventory.
  Material Master Data Issues: The material master record may be incomplete or incorrectly configured, particularly in the accounting or purchasing views.
  Costing Variant Issues: The costing variant being used may not be set up correctly to handle the material's lot size requirements.
  Data Inconsistencies: There may be inconsistencies in the data related to the material, such as missing or incorrect entries in the relevant tables.
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03) and check the relevant views (especially the Accounting and MRP views) to ensure that a lot size is defined.
  If the lot size is missing, you can update the material master (transaction code MM02) to include the appropriate lot size.
  
  
  
  Review Lot Size Settings:
  
  Ensure that the lot size is defined in the MRP view of the material master. You may need to set a standard lot size or a specific lot size that fits your business requirements.
  
  
  
  Check Costing Variant:
  
  Review the costing variant settings (transaction code OKKN) to ensure that it is configured to handle the lot size for the materials you are working with.
  
  
  
  Data Consistency Check:
  
  Run consistency checks on the material master data to identify any discrepancies or missing information. You can use transaction codes like MM02 or MM03 to review and correct any issues.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on handling lot sizes and material master data.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance, especially if it appears to be an internal error that cannot be resolved through standard configuration.
  
  
  
  Related Information:
  
  Lot Size Types: Understand the different types of lot sizes (e.g., fixed lot size, lot-for-lot, etc.) and how they impact inventory management and costing.
  Material Valuation: Familiarize yourself with how material valuation works in SAP and the role of lot sizes in this process.
  Transaction Codes: Common transaction codes related to material management include:
  
  MM01: Create Material
  MM02: Change Material
  MM03: Display Material
  CK11N: Create Cost Estimate
  CK40N: Change Cost Estimate
  
  
  
  By following these steps, you should be able to resolve the CK151 error and ensure that your material master data is correctly configured for lot sizes.