fund-in capabilities

[shaharhada]

I don't understand the meaning of the term fund-in capabilities:
In the text:
"
eDDA (Electronic Direct Debit Authorization) is supported by FPS. eDDA Transfer In Service is an immediate fund-in capability within DBS mobile banking by leveraging an FPS-supported service called eDDA that allows you to:
..."
In the link: https://www.dbs.com.hk/personal/support/digital-what-is-eDDA-transfer-in-service.html
What is meaning of it?

 

[USAFRet]

Also from that site:

"Submit immediate fund-in instructions"

Capability to transfer funds (money) in to an account.