WindoorERP Documentation 19.0

Manage contract retention releases and final defects liability period certificates

1 min read Updated 2026-08-28 WindoorERP 19.0

What this does

Controls the tracking and final billing of 5% or 10% contract retention amounts withheld by commercial clients, releasing invoices upon completion of the Defects Liability Period (DLP).

Before you start

  • Billing or Project Accounting permissions.

Steps

Contract retention releases registry list

Important

Retention tracking ensures that warranty funds (which often represent 50% of net project profit) are systematically recovered.

  1. 01
    Open Sales › To Invoice › Retention Releases.
  2. 02
    Inspect mature retention balances grouped by project contract and expiration date.
  3. 03
    Verify that all warranty snagging requests have been resolved by After-Sales service.
  4. 04
    Generate the final Retention Release invoice and submit the Final Handover Certificate to the main contractor.

Common mistakes

  • Forgetting to claim retention funds after the 1-year defect liability period expires.
  • Releasing retention claims without verifying site water tightness test certifications.

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