General principles of working with the user fields

There are several rules on how to work with user fields for all CRM entities:

To execute correctly the methods that work with user fields and which have userfield in their titles, "User can edit Settings" access permission shall be granted for corresponding CRM role.

To get field names in the current account language for the methods that work with user fields, the following must be added in the filter:
```
'LANG' => 'en'
```
To correctly update multiple fields, such as telephone number or e-mail, the current value ID must be passed to CRM, for example:
```
"PHONE": [ { "ID":245570, "VALUE": "555100501888", "VALUE_TYPE": "WORK" } ], 
```