> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Data sets used to improve detection

> Links to the data sets FlexiCapture for Invoices uses to improve invoice detection: BusinessUnits, Vendors, PurchaseOrders, GLCodes, CostCenters, and available rules.

FlexiCapture for Invoices uses these data sets to detect and validate invoice fields. Provide them to improve detection accuracy.

<CardGroup cols={2}>
  <Card title="BusinessUnits data set" icon="building" href="/flexi-capture/invoice-reader/ir-columns-bu">
    Detects the invoiced business unit and validates its details against a database.
  </Card>

  <Card title="Vendors data set" icon="store" href="/flexi-capture/invoice-reader/ir-columns-vendors">
    Identifies the invoice issuer and checks vendor details against a database.
  </Card>

  <Card title="PurchaseOrders data set" icon="file-invoice" href="/flexi-capture/invoice-reader/ir-columns-po">
    Captures order numbers and amounts and matches invoices with their orders.
  </Card>

  <Card title="PurchaseOrdersItems data set" icon="list-ol" href="/flexi-capture/invoice-reader/ir-columns-po-items">
    Holds order line items, linked to PurchaseOrders by PONumber.
  </Card>

  <Card title="GLCodes data set" icon="hashtag" href="/flexi-capture/invoice-reader/ir-columns-gl-codes">
    Lists the possible GL codes.
  </Card>

  <Card title="CostCenters data set" icon="sitemap" href="/flexi-capture/invoice-reader/ir-columns-cost-centers">
    Lists the cost centers of each business unit.
  </Card>

  <Card title="Available rules" icon="list-check" href="/flexi-capture/invoice-reader/ir-rules">
    The validation rules available for checking invoices.
  </Card>
</CardGroup>