Are you contracting correctly?
Are you the sole shareholder of a company and its managing director? Then watch out! In a company where there is only one shareholder who also acts as the managing director, the law requires stricter rules (not only) for the conclusion of contracts between the company represented by this shareholder and the shareholder himself (e.g. the contract on the discharge of the managing director's office, the shareholder's contributions to the company, etc.).
The stricter requirement in the form of authenticated signatures is necessary if you do not want to face the nullity of the contract execution. This stricter form is required so that the date or content of the contract cannot be changed retrospectively. However, no rule is without an exception, and if there is no doubt as to the content and date of such an act, there is no need to provide authenticated signatures.
However, the requirement of authenticated signatures applies not only to contracts - i.e. to bilateral legal acts - but also to unilateral legal acts, e.g. to acts taken by the company towards the shareholder himself.
In the case of acts where this requirement has not been met, this can only be made up for in the future by acknowledging the signature, however not retrospectively.