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Component Descriptor
Covered in this article

Soap component


The SOAP Component provides the SOAP Web Services work opportunity within a flow.


As an integration platform, should has an opportunity to invoke SOAP Web services over HTTP.

How it works

Step 1

Find and select SOAP component in the component repository Step 1

Step 2

Create new or select existing credentials Step 2

Step 3

Specify WSDL URL, then choose binding and operation consecutively. The order matters! Step 3

Step 4

Configure an input data and click “Continue” Step 4

Step 5

Retrieve sample or add sample manually Step 5: Retrieve sample

Step 6

Retrieve sample result Step 6: Retrieve sample result


The platform supports next SOAP protocol versions:

  • SOAP 1.1
  • SOAP 1.2

Component supports next wsdl styles:

  • RPC/Literal
  • Document/Encoded
  • Document/Literal

Environment variables

EIO_REQUIRED_RAM_MB - recommended value of allocated memory is 2048MB



You can select next authorization type:

  • No Auth
  • Basic Auth
  • API Key Auth (not supported yet).

    Username (Basic auth type)

    Username for Basic authorization header in the SOAP request

    Password (Basic auth type)

    Password for Basic authorization header in the SOAP request



Makes a call to SOAP service over HTTP using public WSDL URL

Input fields description

  • WSDL URI - Public URL address of the WSDL
  • Binding - One of the bindings available and described in the WSDL, which you want to use for a SOAP call
  • Operation - One of the operations available for the binding you have selected above.

SOAP Fault

A SOAP fault is used to carry error information within a SOAP message. The component handles SOAP faults and emits platform exception in this case. SOAP Fault should comply with the W3C SOAP Fault standard.

Input json schema

The component does not have static input json schema as it is dynamically generated for every wsdl/binding/operation specified in the process of configuration the component input fields. Apache Axis2 and FasterXML JsonSchemaGenerator tools are used by the component internally to generate an input metadata. You can refer these tools documentation in order to get deeper understanding about the product.

Output json schema

Output json schema is generated dynamically the same as for the input (see above).

Additional info

You should specify input fields exactly in the order below. You’ll get an error otherwise.

  2. Binding
  3. Operation

Current limitations

The following are limitations of this connector:

  • RPC/SOAP-Encoded styles are not supported.

All major frameworks for web services support Document/literal messages. Most of the popular frameworks also have some support for rpc/encoded, so developers can still use it to create encoded-only services. As a result it is hard to estimate how many web services, in production use, work only with SOAP encoded messages. However there is a tendency to move away from RPC/encoded towards Document/literal. This is so, because the SOAP encoding specification does not guarantee 100% interoperability and there are vendor deviations in the implementation of RPC/encoded.

  • Only self-containing WSDLs are supported now. This means that WSDL containing external XSD schemas will not work in this version of the component.
  • WS-Security header isn`t supported.
  • WS-Addressing isn`t supported.
  • Custom SOAP headers can not be added.
  • The WSDL and associated schemas must be accessible via a publicly accessible URL. File upload of the WSDL and/or XSD schemas is not supported.
  • Component does not support multipart format of message in the SOAP request element. Only first part of request element will be processed in the current component version.