How To Fix WPRO_XI_PROXY022 - Value must not be negative

SAP Error Message - Details

• Message type: E = Error

• Message class: WPRO_XI_PROXY - Messages Service Processing Retail Event

• Message number: 022

• Message text: Value must not be negative

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WPRO_XI_PROXY022 - Value must not be negative ?

  Certainly! Here's a detailed explanation for the SAP error message WPRO_XI_PROXY022: Value must not be negative:
  
  Error Message
  WPRO_XI_PROXY022: Value must not be negative
  
  Cause
  This error typically occurs in SAP Process Integration (PI) or SAP Process Orchestration (PO) scenarios when a proxy or integration process tries to send or process a numeric value that is negative, but the receiving system or the interface definition does not allow negative values for that particular field.
  Common causes include:
  
  Incorrect data mapping: A field that is expected to have only positive values (e.g., quantity, amount, or index) is assigned a negative value during message mapping or data transformation.
  Incorrect input data: The source system or sender application sends a negative value where it is not allowed.
  Interface or data type restrictions: The data type or domain in the SAP system or the proxy interface explicitly restricts values to non-negative numbers (e.g., unsigned integers).
  Validation checks in the proxy runtime: SAP proxy runtime performs validation and throws this error if a negative value is detected in a field that must be positive or zero.
  
  
  Solution
  To resolve this error, follow these steps:
  
  
  Identify the field causing the error:
  
  Check the error logs or trace to find which field contains the negative value.
  Use transaction SLG1 (Application Log) or SXMB_MONI (PI Monitoring) to analyze the message and pinpoint the problematic data.
  
  
  
  Check the source data:
  
  Verify the data coming from the sender system or interface.
  Ensure that the source system does not send negative values for fields that must be positive.
  
  
  
  Review the mapping logic:
  
  Inspect the message mapping or operation mapping in SAP PI/PO.
  Look for any calculations or transformations that might produce negative values.
  Correct the mapping logic to prevent negative values.
  
  
  
  Validate data types and domains:
  
  Check the data type definitions in the proxy or interface.
  If necessary, adjust the data type or domain to allow negative values if business logic permits.
  Otherwise, enforce validation to prevent negative values.
  
  
  
  Implement validation or error handling:
  
  Add validation steps in the sender system or mapping to catch and handle negative values before sending.
  Use exception handling in the integration process to manage invalid data gracefully.
  
  
  
  Test the corrected scenario:
  
  After making corrections, test the interface end-to-end to ensure the error no longer occurs.
  
  
  
  
  Related Information
  
  SAP Notes and KBAs:
  
  Search SAP Support Portal for notes related to WPRO_XI_PROXY022 or proxy validation errors.
  
  
  Transactions:
  
  SLG1 - Application Log for error details.
  SXMB_MONI - Monitor PI/PO messages.
  SE80 or SE24 - To check proxy interface definitions.
  
  
  SAP PI/PO Mapping:
  
  Review graphical or XSLT mappings for data transformations.
  
  
  Proxy Runtime:
  
  The error is thrown by the proxy runtime during inbound or outbound processing when validation fails.
  
  
  
  
  Summary
  The WPRO_XI_PROXY022: Value must not be negative error indicates that a numeric field received a negative value where only zero or positive values are allowed. The fix involves identifying the field, correcting the source data or mapping logic, and ensuring data type constraints are respected.
  
  If you provide more context (e.g., interface name, field name, scenario), I can help with more specific guidance.