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PurchasingSATSASALF

Put quotes side by side and buy from the right vendor

Stop working out the best quote by hand: IWB scores each one on price, lead time, and payment terms, and you pick the winner. Approved requisitions are pooled for ordering, and the incoming e-Invoice list shows the days left to respond.

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Runs in your browser. In the cloud or on your own server, it's the same IWB.

Records
SATSASALF
Comparison weights
Price 60 · lead time 25 · terms 15
Rejection reasons
7 codes
Document types
4
Connected modules
6

01

Pool requests and order the same material once

Approved lines that haven't been ordered yet wait in a requisition pool, and requests from different departments for the same product can merge into one order line. With an approval flow set up, each line is approved on its own, and the requisition takes effect automatically when approval is complete.

Big purchases go to the right approver

Once you set up the flow, requisition and purchase order approvals are tiered by amount, branch, and person. When an order is approved, IWB checks the blocklist and the vendor's risk limit again.

02

Award each line to the best quote

Buy the steel sheet from one vendor and the welding wire from another. IWB scores quotes line by line on price (60), lead time (25), and payment terms (15), and shows the weights on screen. When you convert the award to orders, IWB opens a separate draft purchase order for each vendor.

  • Quotes in other currencies are converted to your accounting currency for comparison
  • When you pick the winners, the RFQ moves to "Awarded"

03

Work with vendors who keep their word

IWB scores your vendors monthly or quarterly. Five measures, such as on-time delivery, return rate, and price compliance, come from your records, and you add the quality score. Your approved vendor rule can be Off (the default), Warn, Require approval, or Block. You can override it by product category, and if an order hits more than one override, the strictest one applies.

  • No tier blocks a goods receipt: if the goods arrived, they're recorded
  • You set the score weights, and requirements planning (MRP) can pick the vendor with the highest score

04

Short or damaged deliveries stay on record

If the vendor delivers part of the order, you receive that part. You record any rejected quantity with one of 7 rejection reasons. Freight and other costs you enter at goods receipt are allocated to the lines by quantity or value and added to inventory cost.

  • Link an incoming e-Waybill to the goods receipt, and it shows as "Matched" in the inbox
  • A carrier's invoice marked as capitalized to inventory isn't expensed a second time

05

Reject a wrong e-Invoice while you still can

In Turkey's commercial e-Invoice scenario, an invoice you don't answer within 8 days is deemed accepted. IWB shows the days left on each invoice's line. If your e-invoicing integrator (özel entegratör) is EDM or Veriban, IWB checks your inbox every hour. It doesn't import the same document twice and matches each one to the vendor by tax ID.

  • Accept, reject, or undo a rejection, and the rejection reason goes to the seller
  • With other integrators, you import the incoming invoice file manually

06

Spot invoices that don't match the order

If an invoice price differs from the order, IWB warns you without stopping the entry, and the invoice list flags the variance. Along with purchase invoices, you record freelance receipts (serbest meslek makbuzu), expense vouchers (gider pusulası), and producer receipts (müstahsil makbuzu). You choose the withholding tax type under the clauses of Article 94 of the Income Tax Law.

  • A withholding type that doesn't fit the document type is rejected
  • VAT withholding is applied line by line
Looking for customs declarations and import costs?Go to Foreign Trade

07Document flow

Know who asked for what you're paying for

An approved requisition line turns into a request for quotation (RFQ) or straight into a purchase order. The goods receipt records the stock entry, and the purchase invoice is linked to its payment. You see an order's requisition, RFQ, invoice, and return in one document flow chart.

  1. RequisitionSAT-2026-00052
  2. RFQSTT-2026-00012
  3. Purchase orderSAS-2026-00098
  4. Goods receiptFIS-2026-00511
  5. Purchase invoiceALF-2026-00318
  6. PaymentTED-2026-00147

08IWB AI

Follow up on deliveries and due dates in chat

Ask instead of digging through lists: IWB AI finds and reads requisitions, orders, purchase invoices, and returns. Before it creates a requisition or receives goods, it shows the action on an approval card, and nothing is created until you approve.

Lookups
2
Actions you approve
10
See how IWB AI works

There are no IWB AI actions for RFQs, quote comparison, or incoming e-Invoices. When IWB AI receives goods, it takes the order's full remaining quantity.

Answers your questions

  • What's the delivery status of our Anadolu Çelik orders?Searching purchasing documents
  • Which items are on order SAS-2026-00098?Fetching purchasing document
  • When are the Marmara Metal invoices due?Searching purchasing documents

Acts with your approval

  • Create purchase requisition
  • Submit requisition
  • Convert requisition to order
  • Create purchase order
  • Receive goods
  • Create purchase invoice from order

Every action comes to you first as an approval card. IWB AI doesn't create or change records without your approval.

09Capabilities

What you can do with Purchasing

  • Foreign currency orders

    The exchange rate is fixed when you place the order, and the order holds the payment terms and installment plan.

  • FX difference invoices

    A draft invoice is prepared for the realized FX difference and matched to the document the vendor sends.

  • Purchase returns

    Open a return from the original invoice, and the stock issue and vendor balance adjustment are recorded together.

  • Incoming e-Waybills

    Link waybills that arrive in your Veriban inbox to the goods receipt.

  • Vendor price catalog

    Set tiered prices by quantity and date, and they fill in the purchase order and RFQ forms.

  • Reordering

    Products that fall below their minimum level get draft purchase orders, one per vendor.

  • Subcontracting purchases

    Open a draft order for a subcontracting (fason) work order, and the goods receipt records the return from the subcontractor.

  • Printouts without prices

    Print purchase orders and goods receipts without prices. When purchase prices are hidden from warehouse staff, they don't see the amounts.

10Compliance

Catch the wrong withholding type at entry

You record incoming e-Invoices, purchase document types, withholding tax, and export-registered purchases under Turkish rules. Warnings about paper invoices and price variances don't stop the entry.

See how e-Invoicing works
  • TTK 21/2Under the Turkish Commercial Code (TTK), an e-Invoice in the commercial scenario is deemed accepted if no response is sent within 8 days. IWB shows the days left on the list.
  • VUK 353/1Under the Tax Procedure Law (VUK), IWB warns you about a paper invoice from a vendor required to issue e-Invoices but doesn't block it.
  • GVK 94Under the Income Tax Law (GVK), you choose the withholding type by clause. Rates can change by presidential decree, so IWB doesn't hard-code them.
  • VUK 234, 235, 236Expense vouchers, producer receipts, and freelance receipts are recorded as separate document types.
  • VUK 262Inventory cost is the net price after discounts, including freight.
  • Export-registered purchases (ihraç kayıtlı) use exemption codes 701, 702, 703, and 704.

11Connected modules

They share the same database and permission model

Industries

12

Frequently asked questions

Are RFQs emailed to vendors?

No. You send the RFQ to vendors yourself. You enter each vendor's quote as it comes in, and IWB compares them line by line.

Is an invoice that doesn't match the order blocked?

No. Matching the invoice against the order and goods receipt (three-way match) is informational. A variance shows as a "Variance" badge on the list, and IWB warns you about price variances, but the entry goes through.

How does requisition approval work?

If an approval flow is set up, each requisition line is approved on its own, and rejected lines are flagged. Once approval is complete, the requisition takes effect automatically. You set the tiers by amount, branch, and person.

Do incoming e-Invoices arrive automatically?

Yes, if you use EDM or Veriban: the inbox is checked every hour. With other integrators, you import the incoming invoice file. The same document isn't imported twice, and it's matched to the vendor by tax ID.

Do freight and customs costs go into inventory cost?

Yes. Freight and other costs you enter at goods receipt are allocated to the lines and added to inventory cost. For imports, you apply customs duty, freight, and brokerage fees to cost in Foreign Trade.