---
type: "decision"
id: "2026-07-06-clean-up-the-legacy-variant-boms-in-bw-classic-before-the"
title: "Clean up the legacy variant BOMs in BW-Classic before the migration instead of migrating…"
date: "2026-07-06"
projects: ["projects/erp-migration"]
people: ["people/reto-ammann"]
source: "sources/2026-07-06-ticket-tck-0433-erp-bom-import"
tags: ["decision"]
---

# Clean up the legacy variant BOMs in BW-Classic before the migration instead of migrating…

Decided on 06.07.2026 in [[sources/2026-07-06-ticket-tck-0433-erp-bom-import|TCK-0433: ERP test migration fails on variant BOMs]].

Clean up the legacy variant BOMs in BW-Classic before the migration instead of migrating them as they are.

## Why

- about a third of the variant BOMs point to parts that no longer exist; migrating them would copy the mess into NovaERP.

## Project

- [[projects/erp-migration|ERP migration]]

## People

- [[people/reto-ammann|Reto Ammann]], Head of IT