In order to templatize/parametrize a SOAP connection field, click on the name of that SOAP connection, click on the field to be templatized, and click on the Inject Template.
a field which accepts injecting a template (For example headers) and click the Inject Template icon shown below.
When selected, the following template selection popup appears:
Select the Data Template and field of choice and click on Inject. This will templatize the selected field.
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