I've never actually come across one of these before but someone doing a City & Guilds level 1 exam in manual bookkeeping said it came up in the exam. She said it looked a little bit like a petty cash voucher and that it mentioned a purchase. I thought it WAS the same thing as a petty cash voucher but my husband said he thought it could be an auditable document to record the company buying something from itself (instead of just helping themselves to stock from the stockroom). Someone else said that they thought it was the equivalent of issuing a cheque i.e transferring money from the current account (bank) to the cash account.
A requisition is just a formal, internal request for something, be it cash, stationery, materials etc. It is a record of who requested the item, and usually who supplied it. The responsibility for the item passes from one to the other
I take it to mean a request for cash, be it for petty cash, or a specific amount from treasury/ accounts.
It could be used to bring the petty cash up to it full float (imprest system). A manager may put in a cash requisition to accounts for the appropriate amount to balance the petty cash
When I worked in industry, if I had to go away I would put in a cash requisition to obtain funds to pay for the hotel, which would normally exceed any petty cash float.
Thanks Bill for the quick reply. That was pretty much what I thought - petty cash or a transfer between the cheque/cash account. I should have been clearer in saying that the example on the paper referred to it being required for 'Purchases' and it was to be posted to the cash book and to the ledger - a bit like an invoice I presume. This is what made my husband make his assumption.