We are the GC on a commercial construction project and a subcontractor sent us a notice of claim for unpaid labor or materials for amounts outstanding even though the amount listed is the retainage held on their contract. They have not finished the project, and retainage has not yet been billed. How can they file a notice of claim against it? Shouldn't they have filed a Notice of Contractual Retainage at the beginning of the project if they were trying to preserve lien rights. I believe they sent us the wrong notice.