YOU SAID:
I am terribly sorry to inform you that you will have no participation in this action.
INTO JAPANESE
あなたがこの訴訟に参加しないことをあなたに知らせて申し訳ありません。
BACK INTO ENGLISH
I'm sorry to inform you that you will not take part in this case.
INTO JAPANESE
あなたがこの場合に参加しないことをあなたに知らせて申し訳ありません。
BACK INTO ENGLISH
I'm sorry to inform you that you will not participate in this case.
INTO JAPANESE
あなたがこの事件に参加しないことをお知らせして申し訳ありません。
BACK INTO ENGLISH
I'm sorry to inform you that you will not take part in this incident.
INTO JAPANESE
あなたがこの事件に参加しないことをあなたに知らせて申し訳ありません。
BACK INTO ENGLISH
I'm sorry to inform you that you will not take part in this incident.
That didn't even make that much sense in English.