Having had a quick look at your Db, I note there are two tables which do not have a relaionship (Is Project_Title the common factor)
There is no primary key for Table 2018.
There appears to be repeating data in the field "Classification"
Databases will never work unless the table structure and relationships (the foundation of any Db) are set up correctly
Might I suggest you read up on Normalisation and Db design.
See
https://bytes.com/topic/access/insig...ble-structures
and/or a document called "Database Design Normalisation.docx:" in
https://bytes.com/topic/access/answe...ent-field-null
I also think it would help if you tell us what your database is supposed to do. It appears to be something to do with project management, but 2018 looks like a date & I have no idea what MDF is supposed to be.
I also advise against very ling field names like "Date_of_Request_for_MDF_inspection_takeover" something like "DateMDFTakover" is just as clear. Having to type that very often will wear your fingers to the bone!
Phil