The revocation of a power of attorney by the principal is possible at any time without any explanation. The revocation can be made in any form and only needs to be brought to the attention of the authorized representative. For evidence reasons, however, we recommend making the cancellation in writing.
The power of attorney may be revoked in whole or in part. In the latter case, it only leads to a restriction of the power of attorney. If a power of attorney has been drawn up in writing, the authorized representative is obliged to return the power of attorney document or to deposit it in court.
More about the Subject:
How can I revoke my will?
What is a power of attorney?
The difference between a power of attorney and a living will