# 7 mistakes that sink ERP implementations — and how to avoid them

> ERP projects usually fail for management reasons, not technical ones: no internal decision owner, scope creeping without control, dirty legacy data, weak training, over-customisation that recreates old chaos, and launching every module at once. The fix: a clear project owner, small phases, data cleansing and role-based training.

Source: https://www.al-arjan.com/en/blog/erp-implementation-mistakes · العربية: https://www.al-arjan.com/ar/blog/erp-implementation-mistakes.md

Author: [AUTHOR_NAME] — 2026-09-26

## The seven mistakes

- No internal decision owner with time and authority.
- Open scope: “let’s add this too” every week.
- Migrating old data without cleaning it.
- One training session for everyone instead of per-role training.
- Customising the system to match every old habit, even bad ones.
- Launching all modules and branches on one day.
- No plan for post-launch support.

## The golden rule

Change the process where the process is wrong, and customise the system where the process is your advantage. Telling these apart is what separates a successful project from an expensive system that repeats old problems.

## Frequently asked questions

### Who should own the project?

A manager who understands the processes, can settle cross-department disputes and dedicates weekly time.

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