Swift 3 Alamofire POST with Headers Parameters, Query Parameters, and Request Body - swift

Question

I am faily new to Alamofire itself, so forgive me if this is a simple one.
I would like to post a bank account object to intuit payments using Alamofire, however I keep getting the following error:
Error Domain=NSCocoaErrorDomain Code=3840 "No value." UserInfo={NSDebugDescription=No value.}
The documentation notes the following:
REQUEST URL
Sandbox Base URL: https://sandbox.api.intuit.com
Production Base URL: https://api.intuit.com
Operation: POST /quickbooks/v4/customers/<id>/bank-accounts
Content type: application/json
Header Parameters:
Request-Id required
Query Parameters:
id required
Request body
{
"name": "My Checking",
"routingNumber": "XXXXX0358",
"accountNumber": "XXXX4534",
"accountType": "PERSONAL_CHECKING",
"phone": "6047296480"
}
My attempts are as follows:
func saveBankAccountToIntuitPayments() {
let url = "https://api.intuit.com/quickbooks/v4/customers/" + userID! + "/bank-accounts"
let parameters: Parameters = [
"name": "John Doe",
"routingNumber": "123321456",
"accountNumber": "432123789012",
"accountType": "PERSONAL_CHECKING",
"phone": "55568925029"
]
ATTEMPT 1
Alamofire.request(url, method: .post, parameters: parameters, encoding: JSONEncoding.default).responseJSON(completionHandler: {
response in
print("running self.parseData(JSONData: response.data!)")
self.parseData(JSONData: response.data!)
})
ATTEMPT 2
let requestId = userID! + getTimeNow()
let header = [ "Request-Id" : requestId ]
Alamofire.request(url: url, method: .post, headers: header, parameters: parameters, encoding: JSONEncoding.default).responseJSON(completionHandler: {
response in
print("running self.parseData(JSONData: response.data!)")
self.parseData(JSONData: response.data!)
})
ATTEMPT 3
request(url, method: .post, parameters: parameters, headers: header).responseJSON(completionHandler: {
response in
print("running self.parseData(JSONData: response.data!)")
self.parseData(JSONData: response.data!)
})
}
This is the code for my json parser:
func parseData(JSONData: Data) {
do {
var readableJSON = try JSONSerialization.jsonObject(with: JSONData, options: .mutableContainers) as! JSONStandard
print("printing readable JSON (below)")
print(readableJSON ?? "no JSON data was returned")
} catch {
print("errror occured (below)")
print(error)
}
}