Mambu Banking Engine

What?

The ability to lock amounts on deposit accounts similar to what we already have in place when deposit account balances are used as guarantees for loan accounts.

• The blocked amount should reduce the available balance on the account

• The blocked amount should not expire unless removed

• The blocked amount cannot be reduced to less than zero

• The blocked amount should holds history of decreases and increases

Why?

There are numerous use cases where funds on account need to be blocked. For example:

• legal proceedings

• debt recovery

• as a workaround for savings buckets

NOTE: This idea has been raised as the authorisation holds implemented with the cards functionality to do not effectively cater to the use cases above as they do expire and the decrease of a hold to below zero will effectively settle the hold. For reference see:

• APP-I-668

• APP-463

There is potentially also overlap with the backup account idea (see DPS-23)