← Sebastián Allende

Writing

Notes on running ERP and financial systems in production

· 6 min read

The bugs that survive an ERP upgrade are the quiet ones

Migrating five major versions forward across four companies and three countries. The failures that raised errors were fixed in days; the ones that changed behaviour without raising anything lasted weeks.

· 5 min read

Alert quality beats alert count

Building a health check that reconciles inventory against the general ledger every six hours, what it found that no report showed, and why an alert nobody acts on is a defect rather than a nuisance.