Question:
BS"D
Shalom, if a Jew Temani, arrives in a community and says that he and shochet, but he does not have teudos Shochet or letter, but he knows all the laws and practice of Shechitah, can a Jew eating from his slaughter?
Answer:
Our minhag is that a shochet needs a letter or some sort of proof that he knows hilchos Shechita, and without it we don’t eat his meat.
Sources:
Rema Y:D 1-1.