How To Fix WS126 - You cannot save. Document data is incomplete (see log)

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 126

• Message text: You cannot save. Document data is incomplete (see log)

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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 WS126 - You cannot save. Document data is incomplete (see log) ?

  SAP Error Message:
  
  WS126 - You cannot save. Document data is incomplete (see log)
  
  Cause:
  The error message WS126 typically occurs when you try to save a document in SAP (often in modules like SAP Financial Accounting, Asset Accounting, or other document processing areas), but the system detects that some mandatory data fields are missing or incomplete. The system prevents saving the document to ensure data integrity and completeness.
  The message suggests that the document data is incomplete, and you should check the log for detailed information about which fields or data are missing or incorrect.
  Common causes include:
  
  Missing mandatory fields (e.g., posting date, document date, account assignment, cost center).
  Incorrect or inconsistent data entries.
  Missing or incorrect reference data (e.g., missing vendor/customer master data).
  Validation or substitution rules that require certain fields to be filled.
  Custom enhancements or user exits that enforce additional checks.
  
  
  Solution:
  
  
  Check the Log:
  
  The message says "see log." Look at the application log or the detailed error log that SAP provides when the error occurs.
  The log will specify which fields or data are incomplete or invalid.
  
  
  
  Complete Mandatory Fields:
  
  Fill in all mandatory fields required for the document type you are processing.
  Ensure dates, amounts, account assignments, and other required data are entered correctly.
  
  
  
  Validate Master Data:
  
  Verify that all referenced master data (e.g., vendor, customer, GL accounts) exist and are active.
  Check if any master data is locked or incomplete.
  
  
  
  Check Custom Validations:
  
  If your system has custom validations, substitutions, or user exits, review them to ensure they are not causing the issue.
  Coordinate with your SAP technical team if necessary.
  
  
  
  Use SAP Standard Tools:
  
  Use transaction codes like SLG1 (Application Log) to view detailed logs.
  Use document display or change transactions to review the document data.
  
  
  
  Re-enter or Correct Data:
  
  After identifying missing or incorrect data, correct it and try saving again.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:  
  
  Document posting transactions (e.g., FB01, FB50, F-02 for FI documents)  
  SLG1 (Application Log) to check detailed error logs  
  OBA5 (Check Document Types and their required fields)  
  
  
  
  SAP Notes:  
  
  Check SAP Notes related to WS126 for your specific module or scenario.  
  Sometimes, OSS notes provide patches or corrections for known issues causing this error.
  
  
  
  User Documentation:  
  
  Review the configuration and documentation for the document type you are working with to understand mandatory fields.
  
  
  
  Common Modules Affected:  
  
  Financial Accounting (FI)  
  Asset Accounting (AA)  
  Materials Management (MM)  
  Sales and Distribution (SD)  
  
  
  
  
  Summary:
  WS126 means the document you are trying to save is missing required data. To resolve it, check the detailed log to identify missing fields, complete all mandatory data, verify master data, and ensure no custom validations block the save. After corrections, the document should save successfully.
  
  If you provide the specific transaction or module where this error occurs, I can give more tailored advice.