- Too many sms codes: you have requested too many sms codes. you must wait 24 hours to receive another.
- You have tried entering too many codes. try again later. ✓ - Facebook Forum
- You tried sms verification too many times whatsapp ✓ - WhatsApp Forum
- You have tried entering too many codes. try again later ✓ - Facebook Forum
- You have reached your sms limit for 24 hours. please try again later. - Yahoo Mail Forum
- Facebook says I have been trying too often ✓ - Facebook Forum
I think it's normal. Here's what I found on WhatsApp Help Center:
To help you remember your PIN, WhatsApp will prompt you to periodically enter your PIN. Unfortunately, there isn't an option to disable this without disabling the two-step verification feature.