Values in the body
The values block is used for updating one or more records of a specific business object.
Which records should be updated, is defined in the filter block. The to-be-updated values have to be listed in the values block.
* 
The values block is mandatory in UPDATE-requests!
Example
UsrReservationMeetingRoom BO: Updating the start and end time of a specific reservation:
{
"filter" : {
"Code" : {"eq" : "P000000445"}
},
"values": {
"BeginDateTime": {
  "date": "2022-12-22",
"time": "16:00:00"
},
"EndDateTime": {
"date": "2022-12-22",
"time": "17:00:00"
}
)
}