How To Fix OE020 - Purchase order no or item no is missing in E1OILT1

SAP Error Message - Details

• Message type: E = Error

• Message class: OE - IS-Oil: ITA/TPI messages

• Message number: 020

• Message text: Purchase order no or item no is missing in E1OILT1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OE020 - Purchase order no or item no is missing in E1OILT1 ?

  The SAP error message OE020, which states "Purchase order no or item no is missing in E1OILT1," typically occurs during the processing of an IDoc (Intermediate Document) related to the purchase order. This error indicates that the required fields for the purchase order number or item number are not populated in the IDoc segment E1OILT1, which is used for conveying item-level details of a purchase order.
  Cause:
  
  
  Missing Data: The most common cause of this error is that the purchase order number or item number is not being sent in the IDoc. This could be due to:
  
  Incorrect mapping of fields in the IDoc.
  Data not being populated in the source system before sending the IDoc.
  Issues in the data extraction process from the source system.
  
  
  
  Configuration Issues: There may be configuration issues in the IDoc processing settings that prevent the correct data from being included.
  
  
  Custom Development: If there are custom developments or enhancements in the IDoc processing, they may not be handling the data correctly.
  
  
  Solution:
  
  
  Check IDoc Data: Review the IDoc data to ensure that the purchase order number and item number are populated correctly in the E1OILT1 segment. You can use transaction WE02 or WE05 to analyze the IDoc.
  
  
  Source System Validation: Verify that the source system (e.g., an external system or another SAP system) is sending the correct data. Ensure that the purchase order and item details are correctly populated before the IDoc is generated.
  
  
  Mapping Configuration: If you are using middleware (like SAP PI/PO or other integration tools), check the mapping configuration to ensure that the purchase order number and item number are being mapped correctly to the IDoc fields.
  
  
  Debugging: If you have access to the development environment, you can debug the IDoc processing to identify where the data is being lost or not populated.
  
  
  Consult Documentation: Review the relevant SAP documentation for the IDoc type you are working with to ensure that you are following the correct structure and requirements.
  
  
  Error Handling: Implement error handling in your IDoc processing logic to catch and log such errors for easier troubleshooting in the future.
  
  
  Related Information:
  
  IDoc Structure: Familiarize yourself with the structure of the IDoc you are working with, especially the E1OILT1 segment, to understand what fields are required.
  Transaction Codes: Use transaction codes like WE02, WE05, and WE19 for monitoring and testing IDocs.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on handling this error.
  Support: If the issue persists, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  By following these steps, you should be able to identify the root cause of the OE020 error and implement a solution to resolve it.