How To Fix WP308 - Parameters for reading IDoc set incorrectly

SAP Error Message - Details

• Message type: E = Error

• Message class: WP - Messages from POS interface

• Message number: 308

• Message text: Parameters for reading IDoc set incorrectly

What causes this issue?

This is probably a program error.

System Response

The system could not process the data.

How to fix this error?

Contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WP308 - Parameters for reading IDoc set incorrectly ?

  Certainly! Here's a detailed explanation for the SAP error message WP308 - Parameters for reading IDoc set incorrectly:
  
  Error Message
  WP308: Parameters for reading IDoc set incorrectly
  
  Cause
  This error occurs when the parameters provided for reading or processing an IDoc (Intermediate Document) are incorrect or inconsistent. Specifically, it usually means that the selection criteria or input parameters used in the IDoc processing function/module are not valid or do not match the expected format or values.
  Common causes include:
  
  Incorrect or missing IDoc number or IDoc control record data.
  Wrong combination of parameters (e.g., specifying both IDoc number and message type incorrectly).
  Using incompatible parameters in the function module or transaction that reads or processes IDocs.
  Incorrect partner number, message type, or direction parameters.
  Attempting to read an IDoc with parameters that do not correspond to any existing IDoc in the system.
  
  
  When does it occur?
  
  When using transactions like WE02, WE05, or custom programs to read or process IDocs.
  When calling function modules such as IDOC_READ_COMPLETELY or similar with incorrect parameters.
  During inbound or outbound IDoc processing if the system cannot find or correctly identify the IDoc based on the parameters.
  
  
  Solution
  
  
  Check the parameters you are using to read the IDoc:
  
  Verify the IDoc number is correct and exists in the system.
  Ensure the partner number, message type, and direction parameters are correct.
  Confirm that the combination of parameters is valid and consistent.
  
  
  
  Use standard transactions to verify IDoc existence:
  
  Use WE02 or WE05 to search for the IDoc by number or other criteria.
  Confirm the IDoc status and details.
  
  
  
  Review the program or function module call:
  
  If you are using a custom program or function module, check the input parameters.
  Refer to the SAP documentation for the function module to ensure correct parameter usage.
  
  
  
  Correct the selection criteria:
  
  If you are using selection screens or filters, adjust them to valid values.
  Avoid mixing incompatible parameters.
  
  
  
  Check for authorization issues:
  
  Sometimes, insufficient authorizations can cause the system to behave as if parameters are incorrect.
  
  
  
  Debug if necessary:
  
  If the problem persists, debug the program or function module to see how parameters are being passed and where the error is triggered.
  
  
  
  
  Related Information
  
  Transactions: WE02, WE05 (IDoc display and monitoring)
  Function Modules: IDOC_READ_COMPLETELY, IDOC_INBOUND_READ, etc.
  SAP Notes: Check SAP OSS notes related to IDoc processing errors.
  IDoc Basics: Understanding IDoc structure, control record, data records, and status records helps in troubleshooting.
  Partner Profiles: Ensure partner profiles are correctly maintained in WE20.
  
  
  Summary
  The WP308 error indicates that the parameters used to read or process an IDoc are incorrect or inconsistent. The solution involves verifying and correcting the input parameters, ensuring the IDoc exists, and using the correct transaction or function module calls.
  
  If you provide the context in which you encountered this error (transaction, program, or scenario), I can help with more specific guidance.