When creating a VSI from Swagger 2 that contains a PATCH method with a parameter, the resulting VSI is created but without a parameter.
For example:
paths:
/pet:
'/pet/{petId}':
patch:
All supported DevTest releases.
During the creation of the VSI, when the URI Rules are shown, verify if there is 'Unmatched Traffic'. If there is, click the 'Properties' and within Analyzer Properties click OK.
Now the patch transaction is shown under URI Rules.