I'm integrating TFS to service desk, taking hours in TFS and creating a worklog in SD. It all work perfectly, but I need a user defined field in the worklog to be updated as well. The display name is 'TFS Task', its UDF_CHAR2 - a simple character field.

My input data looks like the following. This works except for the additional field. Should I be using the display name instead of the internal worklog field name?

{

"operation": {

     "details": {

       "worklogs": {

          "worklog": {

             "technician": "nameOfPerson",

             "description": "Product Backlog Item TFS#xxxx",

             "workHours": "3",

             "workMinutes" : "0",

             "executedTime": "16 Jan 2018, 01:32:08",

             "UDF_CHAR2": "31411"

} }}}

}