How To Fix WS312 - The weight unit of document &1 is missing (no statistical update)

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 312

• Message text: The weight unit of document &1 is missing (no statistical update)

What causes this issue?

The statistical update for document &V2&, item &V3& was terminated as
the weight unit is missing.

System Response

The statistical update is terminated to prevent statistical data being
damaged.

How to fix this error?

Please contact your system administrator, as this message is due to a
program error.
The error occurred in function module &V3&.

Error message extract from SAP system. Copyright SAP SE.

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• What is the cause and solution for SAP error message WS312 - The weight unit of document &1 is missing (no statistical update) ?

  SAP Error Message:
  
  WS312 - The weight unit of document &1 is missing (no statistical update)
  
  Cause:
  This error occurs when a document (such as a goods movement, delivery, or billing document) is being processed, but the weight unit is not specified or missing in the document header or item data. Since the system requires the weight unit to perform statistical updates (e.g., updating stock quantities, delivery weights, or billing statistics), the absence of this information causes the error.
  Typically, this happens when:
  
  The material master does not have a weight unit defined.
  The document is created without specifying the weight unit.
  The configuration for weight units is incomplete or inconsistent.
  The weight unit field is left blank during data entry or data transfer.
  
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to transaction MM03 (Display Material).
  Check the Basic Data view for the material's weight unit (field: Base Unit of Measure and Weight Unit).
  Ensure that the weight unit is maintained correctly.
  
  
  
  Maintain Weight Unit in Document:
  
  When creating or editing the document (e.g., delivery, goods movement), ensure the weight unit is entered.
  For deliveries, check transaction VL02N or VL01N.
  For goods movements, check transaction MIGO.
  
  
  
  Check Configuration of Weight Units:
  
  Use transaction CUNI to check units of measure.
  Verify that the weight unit used is defined and active in the system.
  If necessary, define or correct the weight unit in SPRO under:
  Logistics General -> Units of Measure -> Define Units of Measure
  
  
  
  Statistical Update Settings:
  
  If the error occurs during statistical update, check if the system expects weight unit for statistical purposes.
  Sometimes, the statistical update can be suppressed or adjusted if weight data is not relevant.
  
  
  
  Data Consistency:
  
  If the document was created via interface or batch job, check the data source to ensure weight unit is passed correctly.
  Correct the data and reprocess the document.
  
  
  
  
  Related Information:
  
  Message Class: WS3 (Weight Statistics)
  This message is informational but indicates that statistical updates related to weight will not be performed.
  The error does not usually block document posting but warns that weight-related statistics will be incomplete.
  Weight unit is critical for logistics processes like shipping, billing, and inventory management.
  Always ensure consistent unit of measure usage across master data and transactional data.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Missing or undefined weight unit in document or material master.
  
  
  Solution
  Maintain weight unit in material master and document; verify unit configuration in CUNI.
  
  
  Transaction
  MM03 (Material), VL01N/VL02N (Delivery), MIGO (Goods Movement), CUNI (Units of Measure)
  
  
  Notes
  Weight unit needed for statistical updates; missing unit leads to incomplete statistics.
  
  
  
  
  If you need further assistance, please provide the document number (&1) and the transaction where the error occurs.