Hi Sunny,

prop-138: Restricting AS-ID in ROA, that reached consensus at APNIC 52
to be a guideline will also be implemented along with these four
proposals.
 
As per this link here [1], APNIC secretariat updated the guidelines on 6th December. The text mentioned there does not comply with what is suggested in the prop-138. I can still create ROAs and route/route6 objects using the ROA interface. 

[1] - https://www.apnic.net/community/policy/proposals/prop-138/