Creates or updates allocations for a sender BookTran.

Example request

{
  "bookTranId": 1001,
  "allocationResolvers": [
    {
      "id": 0,
      "allocated": 200,
      "discount": 10,
      "bookTranIdReceiver": 2001
    },
    {
      "id": 0,
      "allocated": 150,
      "discount": 0,
      "bookTranIdReceiver": 2002
    }
  ]
}