How To Fix W-045 - Purchasing organization cannot be entered without Supplier number

SAP Error Message - Details

• Message type: E = Error

• Message class: W- -

• Message number: 045

• Message text: Purchasing organization cannot be entered without Supplier number

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W-045 - Purchasing organization cannot be entered without Supplier number ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  W-045 Purchasing organization cannot be entered without Supplier number
  
  Cause:
  This warning message occurs because the system requires a Supplier (Vendor) number to be entered before you can specify the Purchasing Organization in certain transaction screens or document entries (e.g., Purchase Requisition, Purchase Order, or Info Record maintenance).
  The logic behind this is that the purchasing organization is linked to a specific supplier/vendor in the system. Without specifying the supplier first, the system cannot validate or assign the purchasing organization correctly.
  
  When does it occur?
  
  When you try to enter a Purchasing Organization in a document or screen where the Supplier number is still blank.
  Common in transactions like ME21N (Create Purchase Order), ME51N (Create Purchase Requisition), or when maintaining Info Records (ME11).
  It can also happen if the system is configured to enforce this sequence for data consistency.
  
  
  Solution:
  
  
  Enter the Supplier Number First:
  
  Always enter the supplier/vendor number before entering the purchasing organization. This ensures the system can validate the purchasing organization against the supplier master data.
  
  
  Check the Screen Sequence:
  
  Follow the logical sequence of data entry as per the SAP standard or your organization's customizations.
  
  
  Review Customizing (if applicable):
  
  If this behavior is causing issues or is not desired, check the system configuration:
  
  Go to SPRO ? Materials Management ? Purchasing ? Vendor Master ? Define Purchasing Organization Data for Vendor.
  Verify if there are any settings or user exits/enhancements that enforce this sequence.
  
  
  
  User Training:
  
  Train users to enter supplier/vendor data first before entering purchasing organization data.
  
  
  
  Additional Information:
  
  This message is a warning (W), not an error, so it may allow you to continue but advises you to correct the sequence.
  The message helps maintain data integrity between vendor and purchasing organization assignments.
  If you are working with multiple purchasing organizations and vendors, ensure that the vendor master data is maintained correctly for each purchasing organization.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Message
  W-045 Purchasing organization cannot be entered without Supplier number
  
  
  Cause
  Purchasing organization entered before supplier/vendor number
  
  
  Solution
  Enter supplier/vendor number first, then purchasing organization
  
  
  Related Transactions
  ME21N, ME51N, ME11, Vendor Master Maintenance
  
  
  Configuration Path
  SPRO ? Materials Management ? Purchasing ? Vendor Master
  
  
  
  
  If you need help with a specific transaction or customizing, feel free to ask!