I'd say it depends on your bank, level of activity and parameters shared when opening the account. If something bleeps (meaning it's a way out of the ordinary transaction) they will have to ask for some information.

Naturally, the banks are more vigilant when money is leaving the Bank itself, as they have nothing to hold onto.

@ Muganda is right. If you usually remmit $5K and suddenly you send $ 10K then you will have to provide details unless you are dealing with Family Bank who don't seem to care.

I never knew that banks check this stuff. But I have never received more than 2k.
When withdrawing from equity was hectic, I felt discriminated by the manger not sure if it was because I was young.
That is why I moved banks :( what a waste it is a nice bank!

It was in a savings account I had to sign, have my ID and be verified by the branch manager.
So I go to the branch and she tells me she can't allow me to withdraw without my phone.
I had to go to another branch so as to withdraw you can imagine the struggle and this lady maybe looked at me and thought no way this kid can withdraw, just wow and I was not withdrawing 2k.
I mean't i have never received more than 2k from outside kenya

Same case happened to me last year. Had to produce my phone, and an ATM receipt to confirm identity, alongside the ID, to the branch manager. This was before member introduced the biometrics.