A material requisition, called an indent on many Indian sites, is how the site asks for material. It states the item, quantity, where it will be used, the date it is needed by, and how urgent it is, and is signed or raised by the site engineer.
The office checks it against the budget, the BOQ quantity and stock in hand, then approves it and either issues from stock or raises a purchase order. Approval before buying stops duplicate orders and over-buying. It also leaves a record of who asked for what, which helps when material goes missing.
Raising indents early, with a realistic required date, gives purchase time to compare quotes. Most "urgent" purchases at high rates come from indents raised the day before a pour. A simple weekly look-ahead of upcoming work makes it easy to raise them on time.
Example
Illustrative: "Indent 112: 300 bags OPC for second-floor slab, Block B, needed by 14th, priority high."
Material & inventory in CivilPilot
A material catalogue, requests from site, and stock for every project with every movement recorded.

