Wouldn't it produce strings like this:

stringA","stringB","stringC

leaving strings A and C unquoted?

Published.

More info on autogenerated methods for properties.

Do I have to define both a GET and  POST for the same Route?

Yes.

Usually they have different logic so it makes more sense. What's your use case for GET and POST handlers to be the same?

As a direct solution you can do

write $zcvt("<CheckContractResponse><code>-1</code><message>ÐевеÑнÑй Ñип договоÑа</message></CheckContractResp>","I","UTF8")
<CheckContractResponse><code>-1</code><message>Неверный тип договора</message></CheckContractResp>

Check NoDefaultContentCharset property in request.

Try application/xml instead of text/xml for content type.

If it does not help, check API docs for correct type.

For accept try */*.

Atelier 1.3 released.

I mean response body may contain additional info

print(response.content)

Check response with 500 error code, it probably contains error information

201 looks like a correct response.

500 on the other hand is an error. Check what's the error.

What's the status_code on

            response = session.post(getPropertyUrl(property), params= {"type":"%Numeric", "path": property, "unique":0}, headers=header)
            print(response.status_code)

It actually doesn't create neither database or property.

Check that %Service_DocDB is enabled. Your screenshot also shows that database gets created.

if I have 20 properties... this would be a long code

You need to cycle over all properties, so +2 lines probably.

Made an erro in URL, it's not  .../db/DBName/Propname but .../prop/db/DBName/Propname.

Here's a sample code that creates a db and a property.

import requests

def getBaseUrl(host = "127.0.0.1", port = 52773,  namespace = "user", db = "test"):
    return "http://{}:{}/api/docdb/v1/{}/db/{}" .format(*[host, port, namespace, db])

def getPropertyUrl(property, host = "127.0.0.1", port = 52773,  namespace = "user", db = "test"):
    return "http://{}:{}/api/docdb/v1/{}/prop/{}/{}" .format(*[host, port, namespace, db, property])

def main():

    url = getBaseUrl()
    print(url)
    header = {
        'Content-Type': 'application/json',
    }

    session = requests.Session()
    session.auth = ("_SYSTEM", "SYS")

    response = session.get(url, headers=header)
    #response = requests.get(url, headers=header)
    print(response.status_code)  # Number of error

    if response.status_code == 404:
        print('DB not found, create DB ...')
        response = session.post(url, headers=header)
        print(response.status_code)
    elif response.status_code != 200:
        print('Unknown error: ' + response.status_code + ' ' + response.reason)
    else:
        property = "Ergebniszuf"
        # check that property exist
        response = session.get(getPropertyUrl(property), headers=header)

        if response.status_code == 404:
            print('Property not found, creating property: ' + property)
            response = session.post(getPropertyUrl(property), params= {"type":"%Numeric", "path": property, "unique":0}, headers=header)
            print(response)
        elif response.status_code != 200:
            print('Unknown error: ' + response.status_code + ' ' + response.reason)
        else:

            print('DB found, load data...')

    return 1


if __name__ == '__main__':
    print(main())

Interesting. Check this article - I think you'll need either HTTP Debugging proxy (probably) or Packet analyzer (maybe) to debug this further.

As you have reference implementation (Postman) you can start by comparing Postman request/response and Ensemble request/response using HTTP Debugging proxy.

When you get sc=1 , what about:

set resp=httpRequest.HttpResponse
zw resp
do resp.Data.OutputToDevice()

Compare output of

Set sc = httpRequest.Post("/sample/", 1)

with what Postman sends.

Also, what does

Set sc = httpRequest.Post("/sample/")
zw sc

show?