Unable to Post Payload to SOAP API using SAP CPI !

[prathmesh009]

Hello SAP Community,

I am working on integrating Zoho People (Third-Party HRMS) with SAP Public Cloud to create workforce/employee records. I am using SAP CPI to send data to SAP’s SOAP API. However, I am encountering an error, and I need guidance on resolving it.

Scenario Overview

1. API Selection & Testing:

   • I found the required SOAP API on api.sap.com for replicating workforce data from a third-party HRMS.
   • Using SAP Documentation, I created the SOAP payload and tested it successfully in SOAP UI—it works fine.

2. Issue When Using SAP CPI:

   • The same SOAP request fails when sent via SAP CPI.
   • Error from SAP SOAP API Log: Message "Envelope{http://schemas.xmlsoap.org/soap/envelope/}" not supported (interface: "WORKFORCEPERSONMASTERDATAREPLI" binding
     
     CPI Integration Flow (iFlow) Design

• Sender Adapter: HTTPS
• Processing Steps:
  1. Content Modifier – Preparing Headers
  2. JSON to XML Converter – Converting JSON to XML
  3. Content Modifier – Adding SOAP envelope, binding values using XPath
  4. Request-Reply – Calling SOAP API
  5. Receiver Adapter: SOAP
     
     
     

Observations:

• I simulated the iFlow and checked the payload before the request-reply step → It matches exactly with the payload tested in SOAP UI.
• However, the same payload does not work when passed via SAP CPI.
• When copied from CPI and tested in SOAP UI manually, it works.

Questions:

1. What could be causing the "Envelope not supported" error when sending the request via SAP CPI?
2. Are there any specific headers or content-type settings that SAP SOAP APIs expect from CPI?
3. Could this issue be related to SOAP envelope namespaces? If so, how can I correct them in CPI?
4. Are there any specific configurations needed in the SOAP receiver adapter for SAP Public Cloud APIs?

Any insights or suggestions would be highly appreciated. Thank you!

[TiagoRibeiro]

Hello,

Can you try using the Message Mapping element with the WSDL file available for the API?

Usually with this it already considers the Content-Type settings and correct namespace. Passing the payload manually and also adding the headers through a content modifier then should be considered the Content-Type = "text/xml".

https://api.sap.com/api/WORKFORCEPERSONMASTERDATAREPLI/overview

Looking forward for a positive outcome. 

Thank you 

Tiago Ribeiro

[prathmesh009]

@TiagoRibeiro Thank you for your response, I tried the same flow put message mapping their, mapped fields properly and it worked.

[TiagoRibeiro]

Hello @prathmesh009 

Very good news.

Glad it's now working as expected. Can you also mark this topic as answered and in case you have the time, you can also share your detailed actions for any additional people from the community that might face similar constraints in the future know how to solve it.

Thank you!