1. WSDL URL fetch failure   

• Invalid WSDL URL: Verify the WSDL URL and ensure it is accessible. Test the URL in a browser.

• Authentication required: If authentication is needed, provide the correct credentials.
  

2. Cannot modify WSDL contract   

• Downloaded WSDL is read-only: If the WSDL was fetched via URL, uncheck Download WSDL, delete the URL, and manually edit the contract.
  
• Incorrect WSDL format: Ensure the WSDL XML structure is correct and follows SOAP standards.
  

3. API call fails during execution   

• Incorrect SOAP action: Verify the SOAP action value matches the API specification.
  
• Authentication issues: Ensure the correct credentials are selected for execution.
• Connection timeout: Increase the Connection Timeout if the request is taking longer than expected.
  

4. SOAP response returns errors   

• Invalid input parameters: Check the required fields and ensure they follow the API’s expected format.

• 400 – Server unreachable: Check the WSDL endpoint URL and network connectivity or DRE configuration.

5. Execution via Codex fails   

• Incorrect API ID or name: Verify the values used in outboundSOAP.execute("<id>",<var>).

• Missing variables: Ensure required variables are correctly passed in executeByName("wsdl_name", "function_name", "{var1}:{val1}").