Cannot update the custom field of a deal

i am correctly getting the dealFields from the api and i have obtained the correct key for the dealFields

 const { data: dealFieldsResult, error: dealFieldsError } = await tryCatch(
    dealFieldsApi.getDealFields({
      start: 0,
      limit: 100,
    }),
  );

  const costField = dealFieldsResult.data?.find(
    (field: GetField) => field.name === "Cost",
  );

  console.log("costField", costField);

everything is okay so far, but then when i call the updateDeal

    const { data: updatedDeal, error: updateError } = await tryCatch(
      dealsApi.updateDeal({
        id: deal.id,
        UpdateDealRequest: {
          [costField.key]: fields.cost,
          [gpField.key]: fields.gp,
          [eventDateField.key]: fields.event_date,
          [leadInDateField.key]: fields.lead_in_date,
          [eventTypeField.key]: fields.event_type,
          [attendeesField.key]: fields.attendees,
        },
      }),
    );

i would just get the following error

{
  success: false,
  error: "Validation failed: 3b71d5b6cea10e23f3f433d248add2020d4aff2e: Parameter '3b71d5b6cea10e23f3f433d248add2020d4aff2e' is not allowed for this request; 312f85de0ced3e87d5102af8799f88638fb0924a: Parameter '312f85de0ced3e87d5102af8799f88638fb0924a' is not allowed for this request; ebe2933b7b968117db0d0ca12a6b89eea6968e73: Parameter 'ebe2933b7b968117db0d0ca12a6b89eea6968e73' is not allowed for this request; 8daa51d82bd0cd1501a0c32bdad63e3dcb4a6524: Parameter '8daa51d82bd0cd1501a0c32bdad63e3dcb4a6524' is not allowed for this request; c8fea8cc9b03d66877452525f3f91fad865a4670: Parameter 'c8fea8cc9b03d66877452525f3f91fad865a4670' is not allowed for this request; 9f92052e82918d9c334777fa39060a8140782a54: Parameter '9f92052e82918d9c334777fa39060a8140782a54' is not allowed for this request",
  code: "ERR_SCHEMA_VALIDATION_FAILED",
}

DealFieldsApi is from v1 and DealsApi is from v2 since v2 doesn’t have DealFieldsApi yet.

import { Configuration, DealsApi } from "pipedrive/v2";
import { DealFieldsApi, type GetField } from "pipedrive/v1";