I believe this was possible in V12 but it sees to get blocked now in V13
Do you have an example where this happens?
hubspot_recent_conversion_date_c
I just modified the closed_date of an RLI in version 13.0 with API v11_20 with a timestamp and it worked fine.
rest/v11_20/RevenueLineItems/7c1a703a-15aa-11ee-ba0f-54ee7593936c
{"name":"changes RLI", "date_closed":"2023-09-03T16:20:07+02:00" }
result:
