Carbon is an open-source ERP/MES. In its Onshape push, a chosen Item column that was blank on a line made that line read as the root, and the push deleted BOM lines. A blank or non-numeric Quantity column wrote 1, and a release push could export a model onto a revision held by a locked change notice.
Recurring agent failure issue in carbon (crbnos)
What engineers report
A recurring agent failure problem in carbon (crbnos) that mostly hits the mechanical designer.
Failure pattern: validation / failure
Analyst note
From the Grok pain-radar digests, Nov 8-9 2026 (Nov 8 8:41 AM ET through Nov 9 6:41 AM ET digests plus the Haitch editions). Verified live 2026-11-09: issue/PR read; title and state confirmed.
What it costs a team
Modeled annual cost
$30,000
For a team of 5
Prototype delay
3 days
Modeled schedule slip per occurrence
Time lost
240 min
Per engineer per month, about 1 incidents
How the cost is modeled
240 min/month × 5 engineers × 12 months = 240 hours × $125/hour = $30,000
A modeled estimate with medium confidence. Swap in your own team size and loaded rate to size it for your team.
Engineering tools that address it
No engineering tool profile lists this error yet. Browse tools that connect to carbon (crbnos).
Evidence
More recurring errors in carbon (crbnos)
- A follow-up PR reports that an assembly push exported only the assembly's own STEP, child items got a link and no file, and nothing tied a drawing to the part it shows. Known limits stay: a Variable Studio or derived Part Studio can change a part without changing its own Part Studio, and drawings kept in a separate document are not found.PDM · impact 74
- The Carbon ERP Onshape panel read part number, revision and the BOM's Item and Quantity columns by hard-coded labels, so a company whose BOM template relabels a column, or keeps part numbers in a custom property, had no way to point it there. This is a CAD-to-ERP handoff that breaks on each company's own conventions.PDM · impact 74
- Onshape push into Carbon's ERP now exports a STEP for every BOM row and attaches drawing PDFs to the items they show. Part-defining elements are hashed separately from assemblies, drawings and BOM tables, because before this a drawing edit read as a change to every part.PLM · impact 66
Sourced from public community reports. Costs and delays are modeled estimates, not measurements. Know a better source or a fix? Tell us at hello@productflo.io.