Reference: JSON-to-XML Step Properties

Common Tab

Property	XML Attribute Name	Description
Step Id	id	The unique ID of the json-to-xml mediation step within the assembly.
Input	input	Specifies where the json-to-xml mediation step obtains data as input. There are 5 possible values: message : the entire message, including rootpart and attachments. soapbody : the content of the SOAP body from the rootpart of the message. Only applicable when the input contains a SOAP message. attachment : a MIME attachment within the message. You must specify the attachment index. rootpart : the content of the root part of a MIME message. If the message isn't MIME, the entire message is selected. variable : use a named variable from the MediationContext .
Output	output	Specifies where the json-to-xml mediation step directs the output. There are 5 possible values: message : the entire message, including rootpart and attachments. This value creates a new message, effectively removing any attachments. soapbody : the content of the SOAP body from the rootpart of the message. attachment : a MIME attachment to the message. You must specify the attachment index. rootpart : the content of the root part of a MIME message, or if the message isn't MIME, the message itself. This value preserves any attachments on the original message. variable : save the output as a named variable in the MediationContext .
Root Element Name	root-element-name	The name of the outermost wrapping tag of the XML document.
Nested Array Name	nested-array-name	A name for anonymous nested arrays in JSON input.
Nested Object Name	nested-object-name	A name for anonymous nested objects in JSON input.

Advanced Tab

Property	XML Attribute Name	Description
Description	description	A description of the json-to-xml mediation step that displays in the consolidated log. You can use this feature to describe the step's function and the data on which it is operating.
Execute When	execute-when	A condition that determines whether the json-to-xml step executes.