What i have:
1. Field, that i called Vendor.
2. Workflow, which have an option "send task to a vendor" with a mandatory field, which have to be filled with a vendor name.
3. Types of request, which, i dont know why, also get this mandatory field. And i cant delete it, because of "Cannot delete a field that is required by Jira or Jira Service Desk".
What i need:
1. When i create a task, i dont need the field "Vendor" to show up and dont need to be filled.
2. When i realize, that task should be send to another vendor through the Workflow, i want this field to show up and be mandatory.
What i have at this moment:
This field is shown up in both screens (when i create the task and when i send to vendor and it is mandatory. i can hide this field in the stage of creating ticket, but i have to fill it with any default value. But i dont want it to be like this.
Here are a lot of screenshots (i am sorry, my Jira is Russian, and ill try to give explanations):
1. Here are the field :Vendor (Вендор он Russian) which is bound to screen related to Workflow "send task to a vendor'

2. Here you can see, that field is mandatory and only bound to screen in Workflow:

3. Here are this particular screen of Workflow:

4. Here are this what is work fine and should work like that. When i push "send to the vendor", this screen appears and demand me to fill Vendor field:

5. But it also appears, when i try to make task (request) and it is mandatory and this is shouldnt work like that:

6. And i cant delete it, when i configure task (request):

Sorry for such a huge message, but i decided, that this many screenshots should help to realize what i want.