How Do You Politely Put an Offer Letter on Hold Due to Missing Salary Documents?

Can anyone help me with the offer letter on hold email format due to insufficient documents provided by the candidate to support their current salary?

I can assist with the offer letter on hold email format due to the candidate's lack of documentation supporting their current salary.

Hi, How come an offer letter is issued to a candidate without properly verifying the salary proofs provided by him? Anyway, please refer to the following:

Dear Candidate,

Upon scrutinizing the documents provided by you in support of your current remuneration details, we observe that they are not sufficient for us to determine your current remuneration. Therefore, the offer letter dated _____ issued in your favor is being placed on hold until further information is provided to us. We appreciate your interest in joining our organization.