How To Fix WP611 - Quantity not numeric: material &, store &, quantity &

SAP Error Message - Details

• Message type: E = Error

• Message class: WP - Messages from POS interface

• Message number: 611

• Message text: Quantity not numeric: material &, store &, quantity &

Self-Explanatory Message

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• What is the cause and solution for SAP error message WP611 - Quantity not numeric: material &, store &, quantity & ?

  The SAP error message:
  WP611 Quantity not numeric: material &, store &, quantity &
  
  Meaning / Cause:
  This error occurs when a quantity field related to a material and storage location is expected to be numeric but contains non-numeric characters or is blank. The system tries to process a quantity value (e.g., during goods movement, inventory posting, or production order confirmation), but the input is invalid because it is not a proper number.
  Typical scenarios include:
  
  Manual entry of quantity with invalid characters (letters, special characters).
  Data upload or interface sending incorrect quantity format.
  User input error in transaction screens related to inventory or production.
  Custom programs or user exits passing incorrect quantity values.
  
  
  Where it occurs:
  
  Inventory management transactions (e.g., MIGO, MB1A, MB1B).
  Production order confirmations (CO11N).
  Material document postings.
  Batch input or data migration sessions.
  Custom developments or interfaces involving quantity fields.
  
  
  Solution:
  
  
  Check the input quantity:
  
  Verify that the quantity entered is numeric and formatted correctly (no letters, no commas if not allowed, decimal points as per system settings).
  Ensure the quantity field is not empty.
  
  
  
  Check data source:
  
  If data is coming from an interface or upload, validate the source file or program to ensure quantity fields contain valid numeric values.
  Correct any invalid data before processing.
  
  
  
  Check user input:
  
  Train users to enter quantities correctly.
  Use input validation or field checks in custom programs to prevent invalid entries.
  
  
  
  Check system settings:
  
  Verify decimal notation and quantity field settings in material master and plant data.
  Check if any user exits or BAdIs modify quantity fields incorrectly.
  
  
  
  Debugging:
  
  If the error occurs in a custom program or enhancement, debug to find where the quantity is assigned and correct the logic.
  
  
  
  
  Related SAP Notes / References:
  
  SAP Note 0000000 (example placeholder) — check SAP Service Marketplace for notes related to WP611 or quantity validation.
  Standard SAP documentation on material master and inventory management.
  Check OSS notes for similar errors in your SAP version.
  
  
  Summary:
  WP611 indicates that a quantity field expected to be numeric contains invalid data. The fix involves ensuring that all quantity inputs are numeric and correctly formatted, whether entered manually or via interfaces.
  
  If you provide the transaction or process where this error occurs, I can help with more specific guidance.