Kolleno pushes in the NetSuite Payment Memo field the ID of the payment charge from your payment provider.
For instance, if the payment provider is Stripe, the Memo would contain an ID such as pi_3LAHTKGO2lY6Bbjq12ZA5dCF
It allows to link a NetSuite payment to the exact transaction in your payment provider.
If you need the Memo to be replaced with another value, we would recommend that you create a Custom field in NetSuite that populates the information you want automatically, or a script that replaces the Memo with the exact format you want.