How To Fix WPRO_XI_PROXY020 - &1 contains lower-case letters

SAP Error Message - Details

• Message type: E = Error

• Message class: WPRO_XI_PROXY - Messages Service Processing Retail Event

• Message number: 020

• Message text: &1 contains lower-case letters

Self-Explanatory Message

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• What is the cause and solution for SAP error message WPRO_XI_PROXY020 - &1 contains lower-case letters ?

  SAP Error Message:
  
  WPRO_XI_PROXY020 &1 contains lower-case letters
  
  Cause:
  This error occurs when a proxy name or identifier in SAP PI/PO (Process Integration / Process Orchestration) contains lower-case letters. SAP naming conventions for proxies, especially in the context of XI (Exchange Infrastructure) or PI, require that certain names (like interface names, proxy names, or service names) be in uppercase letters only. The presence of any lowercase letters violates these naming rules, causing the system to throw this error.
  
  Explanation:
  
  SAP XI/PI proxies and interface names are case-sensitive and must be uppercase.
  This restriction is due to the underlying XML and WSDL standards and SAP's internal naming conventions.
  The error message WPRO_XI_PROXY020 specifically points out that the name (represented by &1) contains lowercase letters, which is not allowed.
  
  
  Solution:
  
  
  Check the Proxy Name:
  
  Identify the proxy or interface name that caused the error.
  This is usually visible in the error message or in the context where the proxy is being generated or used.
  
  
  
  Rename the Proxy:
  
  Change the proxy name to uppercase letters only.
  For example, if the proxy name is MyProxy, rename it to MYPROXY.
  
  
  
  Regenerate the Proxy:
  
  After renaming, regenerate the proxy classes or interfaces.
  This can be done in the SAP NetWeaver Developer Studio or via the SAP GUI depending on your environment.
  
  
  
  Check Related Artifacts:
  
  Ensure that all related interface names, service names, and namespace prefixes also follow the uppercase naming convention.
  This includes WSDL files, ESR (Enterprise Services Repository) objects, and integration directory configurations.
  
  
  
  Transport and Test:
  
  Transport the corrected proxy to the relevant system.
  Test the proxy communication to confirm the error is resolved.
  
  
  
  
  Related Information:
  
  
  SAP Notes:
  
  Search for SAP Notes related to WPRO_XI_PROXY020 for any specific patches or updates.
  
  
  SAP Naming Conventions:
  
  SAP recommends uppercase letters for proxy and interface names to avoid such issues.
  
  
  Proxy Generation:
  
  When generating proxies from WSDL or ESR, always verify the naming conventions.
  
  
  Tools:
  
  Use SAP NetWeaver Developer Studio or SAP GUI transaction SPROXY for proxy generation and management.
  
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  Proxy name contains lowercase letters
  
  
  Cause
  Proxy/interface names must be uppercase
  
  
  Solution
  Rename proxy/interface to uppercase only
  
  
  Check
  Proxy names, interface names, WSDL files
  
  
  Tools
  SPROXY transaction, NWDS
  
  
  
  
  If you continue to face issues, please provide the exact proxy name and context of usage for more detailed assistance.