How To Fix WXP820 - Unexpected return code &1 for FB MARA_SINGLE_READ

SAP Error Message - Details

• Message type: E = Error

• Message class: WXP - Retail Planning

• Message number: 820

• Message text: Unexpected return code &1 for FB MARA_SINGLE_READ

Self-Explanatory Message

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• What is the cause and solution for SAP error message WXP820 - Unexpected return code &1 for FB MARA_SINGLE_READ ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WXP820 Unexpected return code &1 for FB MARA_SINGLE_READ
  
  Cause:
  This warning message typically occurs during the execution of a function module or BAdI related to the Web Dynpro or SAP GUI when reading material master data (MARA table). The function module MARA_SINGLE_READ is called to fetch material master data for a single material.
  
  The unexpected return code &1 indicates that the function module returned a return code that the calling program did not expect or handle properly.
  This can happen if the material number does not exist, the user does not have authorization to read the material, or there is a problem with the database access.
  It may also occur if the function module is called with incorrect parameters or if there is a mismatch in the expected data structure.
  
  
  Common Causes:
  
  Material does not exist: The material number passed to MARA_SINGLE_READ is invalid or not present in the database.
  Authorization issues: The user executing the function module lacks the necessary authorization to read material master data.
  Incorrect input parameters: The input parameters to the function module are incorrect or incomplete.
  Database or system inconsistencies: Issues with the database or inconsistencies in the material master data.
  Custom code or enhancement issues: If the function module is called from custom code or enhancements, improper error handling or parameter passing can cause this warning.
  
  
  Solution:
  
  Check the material number: Verify that the material number passed to the function module exists in the system.
  Check authorizations: Ensure the user has the required authorizations to read material master data (e.g., authorization object M_MATE_MAT).
  Review input parameters: Debug or log the input parameters passed to MARA_SINGLE_READ to ensure they are correct.
  Handle return codes properly: Modify the calling program or enhancement to handle unexpected return codes gracefully.
  Check for system inconsistencies: Run consistency checks on the material master data (transaction codes like MM03 to display material, or SE14 for database object consistency).
  Debug the function module call: Use the ABAP debugger to trace the call to MARA_SINGLE_READ and identify why the unexpected return code is returned.
  Check OSS Notes: Search SAP OSS Notes for any known issues related to MARA_SINGLE_READ and the specific return code.
  
  
  Related Information:
  
  Function Module: MARA_SINGLE_READ is used to read material master data for a single material.
  Return Codes: The function module returns various return codes indicating success or specific errors (e.g., material not found, authorization failure).
  Authorization Object: M_MATE_MAT controls access to material master data.
  Transactions:  
  
  MM03 - Display Material  
  SE37 - Test Function Module  
  SE80 or SE38 - Debugging tools  
  
  
  SAP Notes: Check SAP Support Portal for notes related to WXP820 or MARA_SINGLE_READ.
  
  
  Summary:
  The warning WXP820 Unexpected return code &1 for FB MARA_SINGLE_READ indicates that the function module MARA_SINGLE_READ returned an unexpected return code, often due to invalid material number, authorization issues, or incorrect parameters. To resolve, verify material existence, check user authorizations, validate input parameters, and handle return codes properly in the calling program.
  
  If you provide the actual return code value (&1), I can help interpret it more specifically.