How To Fix OL383 - The source and target structure have a different number of fields

OL383 - Overview

• Message type: E = Error

• Message class: OL - Workflow object types: Run-time system

• Message number: 383

• Message text: The source and target structure have a different number of fields

Self-Explanatory Message

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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 OL383 - The source and target structure have a different number of fields ?

  The SAP error message OL383 indicates that there is a mismatch between the number of fields in the source structure and the target structure during a data transfer or mapping process. This error typically occurs in scenarios involving data extraction, transformation, and loading (ETL) processes, such as when using SAP Data Services, SAP BW, or other data integration tools.
  
  Cause:
  
  Field Count Mismatch: The source data structure (e.g., a table or data source) has a different number of fields compared to the target structure (e.g., a target table or data model).
  Changes in Data Model: If the target structure has been modified (e.g., fields added or removed) after the source structure was defined, this can lead to discrepancies.
  Incorrect Mapping: The mapping configuration may not correctly align the fields from the source to the target.
  Data Source Issues: The data source may not be providing the expected fields due to changes in the underlying database