Dynamic Mandatory Fields

In a SharePoint library,

I have folders which are =

a. Admin

b. Events

c. Furniture and Moves

d. Janitorial and Maintenance

e. Parking and Transportation

f. Shipping and Receiving

g. Supplies and Equipment

h. Waste and Recycling

I have Meta data across the library whose data type are all choices and are:

a. Document Type = Contract, Financial, planning

b. Building = Gym, Garage, Heating

c. Asset Category = Office, Playground

d. Fiscal Year = FY23, FY24, FY25, FY26, FY27

e. Vendor = Maple Leaf, Canadian Tire, Home Depot

f. Status = Active, Pending, Not Active

g. Retention Label = 3 years, 5 years

h. Service Type = Admin, Events, Furniture and Moves, Janitorial and Maintenance, Parking and Transportation, Shipping and Receiving, Supplies and Equipment, Waste and Recycling

Service Type and Retention Label are mandatory fields, with the Rule below for all the files in the various folders:

IF Folder Name = Admin, then Service Type = Admin and Retention Label = 5 years; the mandatory fields should be Document Type, Status and Fiscal Year

IF Folder Name = Events, then Service Type = Events and Retention Label = 3 years; the mandatory fields should be Document Type, Status and Fiscal Year, Building and Vendor

IF Folder Name = Furniture and Moves, then Service Type = Furniture and Moves and Retention Label = 3 years; the mandatory fields should be Document Type, Status and Building

IF Folder Name = Janitorial and Maintenance, then Service Type = Janitorial and Maintenance and Retention Label = 3 years; the mandatory fields should be Document Type, Status and Fiscal Year

IF Folder Name = Parking and Transportation, then Service Type = Parking and Transportation and Retention Label = 3 years; the mandatory fields should be Document Type, Status and Fiscal Year

IF Folder Name = Shipping and Receiving, then Service Type = Shipping and Receiving and Retention Label = 3 years; the mandatory fields should be Document Type, Status

IF Folder Name = Supplies and Equipment, then Service Type = Supplies and Equipment and Retention Label = 3 years; the mandatory fields should be Document Type, Status and Fiscal Year

IF Folder Name = Waste and Recycling, then Service Type = Waste and Recycling and Retention Label = 3 years; the mandatory fields should be Document Type, Status and Vendor

I have used Column Default Value Settings for SharePoint to display Auto-Display the Service Type and Retention Label, but I cannot seem to perform the conditional mandatory fields using Validations setting for the other requirements. Please help