GL Journal in Error Status The journal date is not in an open period for this ledger

We have an imported GL journal for multiple business units. Period 3 was closed for one of the business units when they ran the GL Edit/post process. 3 of the business unit Journals posted one of the Business Unit received the Error ;The journal date is not in an open period for
this ledger. They are not able to delete the journal. They tried opening the period and unpost but were not able to resolve. What is the best way to resolve this. Can I reset the flags  on jrnl_hdr_status as "N" and jrnl_process_reqst as "N" so that the Journal Edit/Post will pick them up.