How do I verify the sender balance is not more than sending amount (Stellar Compliance)

External question — Stellar Stack Exchange Author: Tariq Original post: https://stellar.stackexchange.com/questions/1940 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I am using the Stellar federation protocol and successfully integrated 'stellar bridge', 'stellar federation' and 'stellar compliance'. How do I verify the sender is not sending more than his available account balance? Also what is the use of the /compliance/ask_user callback function? I am confused.

External answer — Stellar Stack Exchange Author: Henry Wang Original post: https://stellar.stackexchange.com/a/1954 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. you don't have to do anything for #1, do you? Stellar will fail the transaction if the sender does not have enough.