15 Tech Pack Mistakes That Cost Fashion Brands Money
The 15 most expensive tech pack mistakes fashion brands make — from missing measurements to inconsistent colorways — and how to avoid each one.
Why tech pack errors are expensive
Every error in a tech pack that reaches production creates cost: sample revisions ($200-500 each), production delays (1-2 weeks per round), material waste from incorrect specifications, and potential full-lot rejection if errors reach bulk production.
These 15 mistakes are the most common causes of sample revisions and production issues, ranked by how frequently they occur and how costly they are to fix.
Measurement and sizing errors
The most expensive category of errors.
- Mistake 1: Too few POMs — specifying only 5 measurements when 12+ are needed
- Mistake 2: Mixed units — inches on one page, centimeters on another
- Mistake 3: No tolerances — manufacturer does not know acceptable variation
- Mistake 4: Wrong base size — measurements say M but cover page says L
- Mistake 5: Grading errors — increments that produce unrealistic proportions at extreme sizes
Material and BOM errors
Errors that cause sourcing delays and wrong materials.
- Mistake 6: Missing BOM entries — no thread spec, no elastic spec, no interlining spec
- Mistake 7: No fabric weight — just 'cotton' without gsm specification
- Mistake 8: Color mismatch — BOM says black thread but colorway says navy
- Mistake 9: No hardware specs — just 'zipper' without type, length, slider, finish
- Mistake 10: No care label content — manufacturer guesses washing instructions
Construction and documentation errors
Errors that cause wrong assembly and communication breakdowns.
- Mistake 11: Vague construction — 'standard seams' instead of specific seam types
- Mistake 12: No flat sketches — manufacturer interprets design from photos
- Mistake 13: Wrong revision number — manufacturer works from outdated spec
- Mistake 14: Missing colorway components — drawcord color unspecified in colorway table
- Mistake 15: Metric conversion errors — incorrectly converting between inches and cm
How AI tech packs prevent these mistakes
AI-generated tech packs prevent many of these errors automatically: complete POM sets with tolerances, consistent unit systems, full BOM entries, color consistency across sections, category-appropriate construction notes, and automatic flat sketch generation.
The remaining errors (brand-specific details, supplier codes, revision management) still require human attention, but the most common and most expensive errors are handled by AI generation.