Idaho Admin. Code r. 34.05.06.205
If the filing officer finds any basis under Section 202 to refuse acceptance of a UCC document, the filing officer shall return the document, if written, to the remitter and refund the filing fee. The filing office shall send a notice that contains the date and time the document would have been filed had it been accepted for filing (unless such date and time are stamped on the document), and a brief description of the reason(s) for refusal to accept the document under Section 202. The notice shall be sent to a secured party or the remitter as provided in Subsection 401.02.b. no later than the second business day after of the determination to refuse acceptance of the document. A refund may be delivered with the notice or under separate cover.
Idaho Admin. Code r. 34.05.06.205