Resetting utils subtree.

models/api/finstitutions/payments/request.py

@@ -168,6 +168,7 @@ class PGPaymentRequestData(BaseModel):
 
     amount: float | int = Field(
         description = "the amount of money to be requested",
+        ge = 0,
         frozen = True
     )
 
@@ -179,11 +180,13 @@ class PGPaymentRequestData(BaseModel):
 
     reference: str = Field(
         description = "some reference against which the payment was made",
+        min_length = 3,
         frozen = True
     )
 
     description: str = Field(
         description = "a short, human-readable description of the payment",
+        min_length = 3,
         frozen = True
     )