How To Fix W_CB411 - No external number assigned (number range &1 &2 is external)

SAP Error Message - Details

• Message type: E = Error

• Message class: W_CB -

• Message number: 411

• Message text: No external number assigned (number range &1 &2 is external)

What causes this issue?

External number assignment is active for this number range. In this case
<(>,<)> you implement the method EXTERNAL_NUMBER_ASSIGNMENT in BAdI
<DS:SIMG.WCB_NUMBER_CHANGE>WCB_NUMBER_CHANGE</> to determine the
external number. This BAdI has been implemented, but the method does not
return a number.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W_CB411 - No external number assigned (number range &1 &2 is external) ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  W_CB411 No external number assigned (number range &1 &2 is external)
  
  Cause:
  This warning message occurs when you try to create or post a document or master data object that requires a number assignment, but the number range interval assigned to the object is set to external number assignment, and no number has been manually entered.
  
  Number range interval is set to external: This means the system expects the user to provide the number manually.
  No number entered: The user did not enter a number, so the system cannot assign one automatically.
  The system cannot generate a number automatically because the number range interval is defined as external (manual input required).
  
  
  Explanation:
  In SAP, number ranges can be defined as:
  
  Internal number assignment: The system automatically assigns the next available number from the number range.
  External number assignment: The user must manually enter the number; the system does not assign it.
  
  If the number range interval is set to external, but the user does not enter a number, the system issues this warning.
  
  Solution:
  
  
  Enter the number manually:
  
  When creating the document or master data, enter a valid number within the external number range interval.
  
  
  Change number range interval to internal (if appropriate):
  
  If you want the system to assign numbers automatically, change the number range interval from external to internal in the customizing settings.
  
  Transaction code: SNRO or SNUM (Number Range Objects)
  Or via IMG path depending on the object (e.g., for FI documents, MM documents, etc.)
  
  
  
  Check number range intervals:
  
  Verify the number range intervals assigned to the object and ensure they are consistent with your business process.
  
  
  
  How to check/change number range assignment:
  
  
  Go to the relevant customizing transaction (e.g., for FI documents:
  
  SPRO -> Financial Accounting -> Financial Accounting Global Settings -> Document -> Document Number Ranges -> Define Document Number Ranges)
  
  
  For other objects, use the appropriate IMG path or transaction.
  
  
  Check if the number range interval is set to external or internal.
  
  
  If external, ensure users know they must enter the number manually.
  
  
  
  Related Information:
  
  This message is a warning (W_), so it may allow you to continue after entering the number.
  If you want to avoid manual number entry, use internal number assignment.
  External number assignment is often used when numbers are assigned outside SAP or must follow a specific numbering scheme.
  Always ensure that the number entered manually is unique and within the defined number range interval to avoid duplicate number errors.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Message
  W_CB411 No external number assigned (number range &1 &2 is external)
  
  
  Cause
  Number range interval is external, but no number entered manually
  
  
  Solution
  Enter a number manually or change number range to internal assignment
  
  
  Transaction to check
  SNRO, SNUM, or relevant IMG customizing path
  
  
  Notes
  External number assignment requires manual input; internal allows automatic numbering
  
  
  
  
  If you provide the specific SAP module or object (e.g., FI document, MM purchase order), I can give you more precise instructions on where to check or change the number range settings.