Thanks Shreyansh to take time to reply
Here below is the preview of the message from the POSTMAN preview button
I really am not sure what is the X-CSRF token?
POST /sial/sapnext/generic/odata/uidatetime.xsodata/UIDateTime HTTP/1.1
Host: hanadrp.sial.com:8000
Authorization: Basic YXJhbWFjaGE6U3JpcmFtNjY=
Content-Type: application/json;charset=utf-8
Cache-Control: no-cache
{ "IDTXT" : "1", "IDDATETIME" : "2014-09-01T00:00:00" }