"Duces tecum" is a legal term directing a person to produce specific documents or evidence in a court proceeding, while "ad testificandum" refers to a subpoena that requires a person to testify in court. In summary, duces tecum involves producing documents, while ad testificandum involves giving oral testimony.

Contact the court that issued it.

A subpoena ad testificandum is a subpoena that directs a witness to appear in court to testify. The Latin phrase "ad testificandum" means "to testify." The other type of subpoena is a subpoena duces tecum, which commands a person to bring physical items such as business records to court. The Latin phrase "duces tecum " means "bring with you." It can be difficult to pronounce for most people.

Yes. A 'subpoena" requires you to attend. You will have to give testimony , under oath, that you know nothing about any of it.

AD plus AD in hexidecimal = 15A