Tessitura Source Number as a URL Parameter
Donate2, Stream2, and Flex2 Forms require that a Tessitura source is assigned to the form so the order can be processed in Tessitura. Organizations that want to track email campaigns using a source at a more granular level in Tessitura can override the form level source using a key value pair as a URL parameter. The override source number must be a valid source number in Tessitura. If the override source number is invalid, the form will fallback to using the source that was originally assigned to the form.
Both promo= and source_no= are valid options
Where XXXXXX = the code for the form
Where xxxxx = the Tessitura source number to be used at checkout