Dita Fakhrana Gets Married In Singapore, See Terms and Conditions and Fees to be Spent.
Citing from the https://www.mfa.gov.sg/ page, Indonesian citizens or Indonesian nationals can get married in Singapore by registering directly with the Singapore government. This marriage is a marriage registered in the Registry of Marriages or ROM.
ROM itself only serves interfaith or non-Muslim marriages. If both the bride and groom are Muslims, they can be registered with the Muslim marriage registry.
For foreigners who want to register their marriage in Singapore, they must first stay in Singapore for at least 15 days before registering their marriage. It is not necessary for both the bride and groom, but one of them can do it.
This marriage registration is done online by attaching a document in the form of a passport or other residence documents. It is also accompanied by a marriage consent form, a death certificate from an ex-spouse or a divorce decree, residence papers for witnesses over 21, and a credit card.