How To Fix W5140 - Please enter a vendor

SAP Error Message - Details

• Message type: E = Error

• Message class: W5 - Messages for MM-WEB Applications and BAPIs

• Message number: 140

• Message text: Please enter a vendor

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message W5140 - Please enter a vendor ?

  SAP Error Message:
  
  W5140 - Please enter a vendor
  
  Cause:
  The message W5140 appears when a vendor field is left empty in a transaction or master data maintenance where the vendor information is mandatory. This typically happens in procurement-related transactions such as:
  
  Creating or changing purchase orders
  Entering vendor invoices
  Vendor master data maintenance
  Any other transaction requiring vendor identification
  
  The system expects a valid vendor number to proceed, and if it is missing, it triggers this warning/error.
  
  Solution:
  
  
  Enter a Vendor Number:
  
  Make sure to input a valid vendor number in the required field. You can:
  
  Enter the vendor number directly if known.
  Use the search help (F4) to find and select the correct vendor.
  
  
  
  Check Field Settings:
  
  If you believe the vendor field should not be mandatory in your scenario, check the configuration or screen layout to confirm if the field is set as required.
  
  
  Verify Vendor Master Data:
  
  Ensure the vendor exists and is active in the system. If the vendor is missing, create or activate the vendor master record.
  
  
  Check User Exits or Enhancements:
  
  Sometimes custom code or validations enforce vendor entry. Review any user exits, BADIs, or enhancements that might be causing this message.
  
  
  
  Related Information:
  
  Transaction Codes: ME21N (Create PO), MIRO (Enter Invoice), XK01/XK02 (Vendor Master)
  Field Name: Vendor (LIFNR)
  Message Class: W5 (Vendor-related messages)
  Message Number: 140
  
  
  Summary:
  The SAP message W5140 - Please enter a vendor is a prompt to ensure that a vendor number is provided where required. To resolve it, simply enter a valid vendor number in the relevant field. If the message appears unexpectedly, check configuration, master data, and custom code for issues.
  
  If you need help identifying the vendor or troubleshooting further, please provide the transaction code and context where the message appears.