from marshmallow import Schema, fields # Transaction Verify Schema class TransactionVerifySchema(Schema): counter = fields.Str(required=True) transactionId = fields.Str(required=True) requestID = fields.Str(required=True) customerId = fields.Str(required=True) accountId = fields.Str(required=True) countryId = fields.Str(required=True) # Static value “01” transactionType = fields.Str(required=True)