Cost centers on invoice line items (KOST1 / KOST2)

Assign KOST1 and KOST2 per line in the invoice spreadsheet grid · not only on the invoice header. Export uses each line’s values when present, and falls back to header cost centers when a line slot is empty.

Related: Editing invoices, Spendesk cost center mapping, and DATEV Rechnungswesen.

1. When line-item cost centers are available

Line-level KOST1 / KOST2 columns appear when:

• Tenant feature Line item cost centers is enabled, and
• Cost centers are not deactivated under Settings → Accounting Preferences (Deactivate cost centers is off).

If cost centers are deactivated for the tenant, header and line cost center fields are hidden and cost dimensions are omitted from accounting export.

2. Edit on the line items grid

1. Open a payable or expense in the combined invoice view.
2. In the line items spreadsheet, use the KOST1 and KOST2 columns (same combobox behaviour as header cost centers).
3. Click a cell, pick or type a cost center number, Enter to save, Escape to cancel.

You can paste from Excel into KOST columns when bulk-editing lines.

3. Header cost centers and export

Header Cost center fields still exist when cost centers are enabled. For export:

• Each export line uses line KOST1/KOST2 when set on that line.
• Empty line slots can fall back to the matching header cost center for that slot.

What you see on invoice detail and in export preview should match what is stored on the match · not values invented only at export time.

4. Expense providers and automatic line fill

When invoices arrive from an expense provider (for example Spendesk or Rydoo), Cortena can map provider cost dimensions onto line KOST1 / KOST2 when your integration mapping is configured. Manual edits on the grid follow the same save rules as header fields.

5. Tips and limitations

• Requires Line item cost centers (tenant feature). Without it, only header cost centers apply.
• Deactivate cost centers on the tenant hides all cost center UI and strips cost centers from saves and export.
• Workflow conditions and Drive template variables that reference cost centers respect the same policy · when disabled, KOST placeholders are skipped.
• Matching agents may propose header or line cost centers; always verify split invoices before export.

Quick reference