How It Works:

1. Product Requisition: Users submit requests for items or services.
2. Purchase Request Administration: The purchasing team reviews the request, gathers supplier quotes, and selects the best offer.
3. Purchase Order Processing: Approved purchase requests are converted into Purchase Orders (POs), including supplier selection, pricing, and payment terms.
4. Supplier Management: Only registered suppliers can be used. If a supplier is missing, they must be added before proceeding.
5. Finalizing Orders: The system tracks delivery, invoices, and payments until the order is completed.

Purchasing Work Flow

graph TD;
  %% Process Start
  A[Start Purchase Process] -->|User Submits Request| B(Product Requisition)

  %% Product Requisition
  B -->|Needs Approval| C[Review Purchase Request]
  C -->|Approved| D(Purchase Request Administration)
  C -->|Rejected| E[Request Sent Back to User]

  %% Purchase Request Administration
  D -->|Get Supplier Quotes| F[Select Registered Suppliers]
  F -->|Compare Quotes| G[Approve Best Supplier]
  G -->|Approved| H(Create Purchase Order)
  G -->|Need More Quotes| F

  %% Purchase Order Creation
  H -->|Define Pricing & Payment Terms| I[Finalize PO Details]
  I -->|Send PO to Supplier| J[Generate PDF & Send Email]
  J -->|Supplier Confirms| K[Track Delivery & Invoices]
  K -->|Receive Items| L[Mark PO as Delivered]
  K -->|Partial Delivery| K

  %% Supplier Management
  F -->|Supplier Not Registered?| M[Register New Supplier]
  M -->|Supplier Approved| F

  %% Process End
  L -->|Complete Payment| N[Close PO & Archive]
  N -->|End Process| O[Process Complete]