The most common remedies sought by letters rogatory are service of process and taking of evidence.
This evidence may be to answer questions relevant to the determination of an issue of fact, or for disclosure of documents.
[3] Courts usually have the power to subpoena witnesses only from within the jurisdiction of their own legislature unless they are aided by foreign judicial, or sometimes legislative, authority.
Later conventions, created after the institution of the Hague Conference on Private International Law, which was drafted in both English and French, commanded more support.
For situations exclusively among member states of the European Union, two regulations (1348/2000 and 1206/2001) superseded the two Hague Conventions.