How To Fix WAB048 - For document splits, only one FI doc type may use external no. assignment

SAP Error Message - Details

• Message type: E = Error

• Message class: WAB - Messages Settlement Management

• Message number: 048

• Message text: For document splits, only one FI doc type may use external no. assignment

Self-Explanatory Message

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• What is the cause and solution for SAP error message WAB048 - For document splits, only one FI doc type may use external no. assignment ?

  SAP Error Message:
  
  WAB048 – For document splits, only one FI doc type may use external no. assignment.
  
  Cause:
  This error occurs during document splitting in Financial Accounting (FI) when more than one FI document type is configured to use external number assignment within the same document splitting scenario. SAP requires that only one FI document type can have external number assignment active to avoid conflicts in document numbering and ensure consistency in document processing.
  
  Explanation:
  
  Document Splitting is a functionality in SAP FI that allows the system to split accounting documents according to certain characteristics (e.g., segment, profit center).
  When document splitting is active, the system expects a consistent and unique numbering approach for FI documents.
  If multiple FI document types are set to use external number assignment (i.e., the document number is assigned externally, not by the system), SAP cannot guarantee unique and consistent document numbers across splits.
  Hence, SAP restricts the configuration to only one FI document type with external number assignment in the document splitting context.
  
  
  Solution:
  
  
  Check FI Document Types Configuration:
  
  Go to transaction OBA7 (or SPRO path: Financial Accounting ? Financial Accounting Global Settings ? Document ? Document Number Ranges ? Define Document Types).
  Review the document types used in your document splitting scenario.
  
  
  
  Adjust Number Assignment:
  
  Ensure that only one FI document type is set to use external number assignment.
  For other document types involved in document splitting, switch to internal number assignment (system-assigned numbers).
  
  
  
  Modify Document Splitting Configuration:
  
  If necessary, adjust the document splitting rules or document types to align with the number assignment restrictions.
  
  
  
  Transport and Test:
  
  After changes, transport the configuration to the relevant system.
  Test the document posting to confirm the error no longer occurs.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  OBA7 – Define Document Types and Number Ranges
  FB01 / FB50 – Posting FI documents (where error might occur)
  SPRO – IMG configuration path for document splitting and document types
  
  
  
  SAP Notes and Documentation:
  
  SAP Note related to document splitting and number assignment restrictions.
  SAP Help Portal documentation on Document Splitting and FI Document Types.
  
  
  
  Best Practices:
  
  Use internal number assignment for most document types in document splitting scenarios.
  Reserve external number assignment for a single document type if absolutely necessary.
  Maintain consistent number range intervals to avoid overlaps.
  
  
  
  
  If you need further assistance, please provide details about your document types and number assignment settings.