What are the entry requirements for Lion-Phillip S-REIT ETF if purchase via OCBC BCIP?

Yes for BCIP, minimum of $100/month for each stock you choose.

From website:

What do you need to start BCIP?

For Cash subscriptions all you need is an OCBC deposit account and a BCIP account. If you wish to subscribe using SRS, you will also need an OCBC SRS account. The deposit account or SRS account will be used to fund investments in BCIP.

You do not need to open any securities trading account or Central Depository (Pte) Ltd (CDP) account to start BCIP.

If you invest using cash, OCBC Bank has appointed OCBC Securities Pte. Ltd to safe keep your shares in a sub-account.

If you are investing using SRS, your shareholdings will be kept in a sub-account in the name of OCBC Nominees Singapore Private Limited.

Yes, you need a minimum of $100 to invest with OCBC BCIP.

Yes again, you can open an ocbc account for BCIP. Just take note the account minimums and fall below fees if any.