How To Fix WZRE_IDOC008 - An initial value is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: WZRE_IDOC - Messages For IDOC Tool

• Message number: 008

• Message text: An initial value is not allowed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WZRE_IDOC008 - An initial value is not allowed ?

  Certainly! Here's a detailed explanation for the SAP error message WZRE_IDOC008: "An initial value is not allowed":
  
  Error Message
  WZRE_IDOC008: An initial value is not allowed
  
  Cause
  This error typically occurs during IDoc processing or data transfer when a field that is mandatory or expected to have a meaningful value is found to be initial (empty or zero). In SAP, some fields are not allowed to be empty or zero because they are key fields or required for further processing.
  Common scenarios include:
  
  A segment or field in the IDoc is left blank or zero, but the business logic or the IDoc structure requires a non-initial value.
  The mapping or data extraction logic did not populate a mandatory field.
  Custom enhancements or user exits incorrectly set a field to initial.
  The inbound or outbound process expects a value, but the source system or interface did not provide it.
  
  
  Solution
  To resolve this error, follow these steps:
  
  
  Identify the Field Causing the Error:
  
  Check the IDoc segment and field mentioned in the error log or trace.
  Use transaction WE02 or WE05 to display the IDoc and inspect the data.
  Look for fields that are empty or zero but should have a value.
  
  
  
  Check the IDoc Definition:
  
  Use transaction WE31 to view the segment structure.
  Verify which fields are mandatory or have restrictions.
  
  
  
  Review the Data Source or Mapping:
  
  If the IDoc is generated from an interface or middleware, check the mapping logic.
  Ensure that the source system or program populates all mandatory fields.
  
  
  
  Correct the Data or Logic:
  
  Populate the missing field with a valid value.
  If the field is optional but the system expects a value, adjust the logic or configuration accordingly.
  
  
  
  Test the IDoc Processing Again:
  
  After correction, reprocess the IDoc.
  Use transaction BD87 to reprocess inbound IDocs if applicable.
  
  
  
  Check for Custom Code:
  
  If user exits, BADIs, or enhancements are involved, review them to ensure they do not clear mandatory fields.
  
  
  
  
  Related Information
  
  
  Transactions:
  
  WE02 / WE05 – Display IDocs
  WE31 – IDoc Segment Editor
  BD87 – Reprocess IDocs
  WE19 – Test tool for IDocs
  
  
  
  Notes and Documentation:
  
  SAP Notes related to IDoc field validations.
  Check SAP Help Portal for IDoc structure and mandatory fields.
  
  
  
  Common Fields Often Causing Issues:
  
  Document numbers, partner numbers, dates, or key identifiers.
  
  
  
  
  Summary
  The error WZRE_IDOC008 means a mandatory field in the IDoc is empty or zero, which is not allowed. The solution is to identify the field, ensure it is populated with a valid value, and correct the data source or mapping logic accordingly.
  
  If you provide the specific IDoc type or segment, I can help you identify the exact field causing the issue.