Dual criminality is required. A request for ordering and performing the investigative measure shall comprise a copy, a certified copy or a photostat copy of the order of the competent authority. If this is not a court order, the authority requesting judicial assistance shall present a statement explaining that the prerequisites required for such measures are met under the law applicable in the requesting State.
A systemic infiltration by undercover agents over a longer period of time may only be ordered for a period of time that is likely to be required in order to fulfill the purpose, at the longest for a period of three months. However, the order may be repeated as far as the requirements are persisting.
Measures shall be ended when
1. their requirements are no longer fulfilled
2. their purpose has been achieved or can no longer be achieved or
3. the public prosecutor orders the termination of the measures.
The undercover agent may use false documents to pretend to have another identity. However, in order to enter a third person's premises, they are not allowed to pretend to have access rights; the premise can only be entered with the consent of the owner.
There shall be compliance with a request for judicial assistance which requires a procedure that differs from Austrian laws on criminal procedure, if this is compatible with the criminal procedure and its principles.