Articles on: Troubleshooting

Custom tags don't match: why a tagged item won't print on a printer

A free (idle) printer won't pick up your queue item because the inspector says its custom tags don't match. This is a quick fix.

What this means

SimplyPrint uses tags to route the right files to the right printers - so a job only runs on a printer that can actually print it correctly, and you don't waste time and filament printing something on the wrong setup. A file or queue item can be tagged with details like its material, color, nozzle size and bed type, and SimplyPrint also checks things like whether the model fits and whether the printer can run the file. When a printer doesn't meet one of the item's requirements, the two won't match, and the item won't start on that printer.

Custom tags are free-form labels you create (like "dialed-in" or "high precision"). The printer must carry ALL of the item's custom tags. A printer can have extra tags, but if it's missing even one the item requires, it's excluded.

How to fix it

Add the missing tag to the printer.
Or remove the tag from the item if it isn't really required.

Learn more

For every reason a printer won't take a queue item - and how the queue inspector shows you which one - see the guide below.

Why won't my printer print this queue item? Using the queue inspector

Updated on: 04/07/2026

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