Map fields from the Transaction's Parent Object to the Terminal's Transaction screen using a Custom Metadata Type called, "Virtual Terminal Mapping."
Please make sure the fields mapped have the same field type and property. For example, if you created a custom field to prepopulate currency, make sure it matches the same format as the Currency ISO field on the Transaction record.
Fields that can be prepopulated:
- Related To
 - Payment Method
 - Description
 - Amount
 - Currency
 - Holder's Name (Note: This is for credit card Payment Methods only.)
 - Custom Fields
 
Navigate to Custom Metadata Types
Virtual Terminal Transaction Configuration
New Record Screen