Update a single Sales Order field

Hi. I'm trying to update a single field in SalesOrders module using API. When I execute the code I got success messages, however the field does not change its original value. Following the code:

import urllib

import urllib2

import csv

#You should have the price book id and product id, for using this API.

authtoken = 'be00fd0cdd8b1566c4a2d2cdbe24ad34'

xmlData = ''

final_URL = " https://crm.zoho.com/crm/private/xml/SalesOrders/updateRecords"

with open('/home/carlos/Documents/Embarques_Consecutivo.csv') as f:

reader = csv.reader(f, delimiter=';')

header = next(reader)

for row in reader:

xmlData = '<SalesOrders><row no="1"><FL val="Asunto Embarque">' + row[1] + '</FL></row></SalesOrders>'

params = {'authtoken':authtoken,'scope':'crmapi', 'newFormat':'1','id':row[0],'xmlData':xmlData}

data = urllib.urlencode(params)

request = urllib2.Request(final_URL,data)

response = urllib2.urlopen(request)

xml_response = response.read()

print(params)

print(xml_response)

print('Embarque Actualizado*********************************************************************************************************************************')

P.D. The field wich I want to update is a auto numeric field. Is it possible to update this field type?

Thanks.

Carlos