put https://api.indigitall.com/v2/cs/customers/field
Assigns or updates values to customer fields. The fields must already exist. If the customer does not exist, create it.
If a formatting error occurs in any of the fields an error code 400 will be returned and in that case no modification will be made. Unless ignoreErrors is set to true
When using a field of type datetime, set the date according to ISO 8601 standard. E.g: 2021-10-22T10:46:23.897Z