Message to a user during document posting

is the best way to show information to a user during the document posting? If using a Message procedure, the user cannot see messages because the document form is closing very fast after posting.

There is something wrong with your document logic. The document posting must be performed as fast as possible, with no questions, all questions should be asked before the posting process start. Due to the posting is performed in a transaction and the longer transaction lasts, the longer other users’ transactions cannot be performed.