Another one of those pesky Paypal security mechanisms.
Helps to have the account verified. Also helps to not attempt to move money received immediately.
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AGED SUPER HIGH LIMIT ACCOUNTS: 10,000/$1,000,000 and 25,000/$500,000
yep this is a soft limit they put on on your paypal account, so if you use the 'send money' option on payments that have only been received less than a day or 2 it will do this as a precaution. It usually goes away after 72 hours.