I have a little problem: when i run database sync says that there are some object that do not have a line in row database or id ...or things like...but when i try to isolate them after ID there is nothing.

any sugestions ?

thanks

Run the database audit command. Sometimes entries in the database are deleted by the database user, these do then not automatically get deleted on the drawing.

Running the DB Audit command mathces entries in the drawing with entries in the Database.

OK, I understood ...another thing :
i run database sync ...and everything it's OK ...but if i run database audit says that many thing are wrong. do u know why ?
10x for the answer

i have another problem : i need to add some columns or rows to the vessels; can i do that to a project that is already started ?
what do i have to modify ? i have modified table setup but nothing happened

You have to add them to the database and to the database.tbl. Open the database.tbl in the project folder in a text editor.