How To Fix WE301 - Specify a weight EAN prefix

SAP Error Message - Details

• Message type: E = Error

• Message class: WE - Messages for EAN Customizing and for EAN management in MM_BD

• Message number: 301

• Message text: Specify a weight EAN prefix

What causes this issue?

You have entered a check algorithm for weight EANs but no weight EAN
prefix.

System Response

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?

Enter the EAN prefix that has been predefined for the current number
category.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WE301 - Specify a weight EAN prefix ?

  SAP Error Message:
  
  WE301 - Specify a weight EAN prefix
  
  Cause:
  The error message WE301 occurs during the processing of IDocs (Intermediate Documents) related to shipping or logistics, particularly when handling material or product data that involves weights. The system expects a weight EAN prefix (European Article Number prefix) to be specified but it is missing or not maintained.
  In many SAP logistics or EDI scenarios, the weight of a product or package is encoded with a specific EAN prefix to identify the type of data (e.g., weight, quantity, batch number). If this prefix is not defined or maintained in the system, SAP cannot correctly interpret or process the weight information, leading to this error.
  
  When does it occur?
  
  During IDoc processing for messages like DESADV (Delivery Advice), ORDERS (Purchase Orders), or other logistics-related IDocs.
  When the system tries to read or write weight information encoded with an EAN prefix but the prefix is not specified in the configuration.
  Typically in scenarios involving EAN-128 barcodes or GS1 standards where weight data is encoded with specific prefixes.
  
  
  Solution:
  
  
  Maintain the Weight EAN Prefix in SAP:
  You need to specify the weight EAN prefix in the relevant customizing settings. This is usually done in the logistics or EDI configuration.
  
  Transaction Code: SPRO ? Logistics Execution ? Shipping ? Basic Shipping Functions ? Packing ? Define Weight EAN Prefixes
  Or directly via the IMG path:
  Logistics Execution
    ? Shipping
      ? Basic Shipping Functions
        ? Packing
          ? Define Weight EAN Prefixes
  
  Here, you maintain the EAN prefixes that identify weight information in barcodes or IDocs.
  
  
  
  Check the Material Master or Packaging Material:
  Sometimes the error arises because the packaging material or the product master data does not have the correct EAN prefix assigned.
  
  
  Verify IDoc Data:
  If you are processing inbound or outbound IDocs, check the segments related to weight and EAN prefixes to ensure the data is correct and complete.
  
  
  Consult EDI/Logistics Team:
  If you are unsure about which prefix to use, consult your EDI or logistics team to get the correct EAN prefix according to your business or industry standards.
  
  
  
  Additional Information:
  
  EAN Prefixes are part of the GS1 standards used worldwide for product identification.
  Weight prefixes are used to encode variable data such as weight or quantity in barcodes.
  The error WE301 is a standard SAP message indicating missing configuration rather than a system bug.
  Proper configuration ensures smooth processing of shipping documents and accurate weight data handling.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WE301 - Specify a weight EAN prefix
  
  
  Cause
  Missing or undefined weight EAN prefix in SAP configuration
  
  
  Solution
  Maintain weight EAN prefixes in SPRO under Logistics Execution ? Shipping ? Basic Shipping Functions ? Packing ? Define Weight EAN Prefixes
  
  
  Related Areas
  IDoc processing, EDI, logistics, packing, GS1 standards
  
  
  
  
  If you need further help, please provide details about the IDoc type, process step, or system version.