UPDATE_DOCINFO in 11g and 12c .

When we passed following request to UCM 11g

http://hostname:51220/cs/idcplg?IdcService=UPDATE_DOCINFO&dDocName=ddocname3&dID=3319182&xComments=Hellotest&IsJava=1 - it worked on 11g.

11g was able to process response with docname3 as dummy value from ridc calls.It use to work with dId parameter itself. .

 However , in 12c when i pass same request , it doesn't work .It asks for dDocname parameter as mandatory field to be passed which is fine as per documentation.

My question is why it worked in 11g but not in 12c now.What has changed in underlying calls.Kindly let me know. Is there any customization possibility to get response on 12c only by passing dID & dummy value of dDocname . This will save us from lot of code changes on production system. Thank you.