In order to perform the accounting correctly, each and every bank movement in your corporate account must have a documentary support or justification. The Estonian authorities are very strict in that regard.
Each payment to suppliers needs a purchase invoice, and all earnings from customers need an income invoice. Salaries must be declared as such, as well as dividends. Everything else, you must inform us so that we know how to declare them.
The golden rule is: each invoice must have a bank movement and vice versa.