Bank Documents

Hello Experts,

I need your help.

We have created a internal bank account and need to define bank documents. Our bank cheque numbers  starts with ex: 123456 and ends with 123476. But out of these cheques, two 123466 & 123467 are security cheques given to vendor.

Here we need your help to define  documents to give start and end cheque numbers and how to variate security cheques from definition.

Thanks in advance.