We are glad to hear you were able to solve the issue.

The parameter to indicate the template would be template={template_id}. The value is specific to service record template ID, according to SR type.

Relevant information can be obtained from https://documentation.sysaid.com/docs/rest-api-guide and https://documentation.sysaid.com/docs/rest-api-details

Don't hesitate to reach out if further assistance is required.