Use this article when Estimator says there are no valid combinations for a quote, when a press you expect is missing from the route, or when a machine from the wrong production path is being chosen. After this you will know which Tag is mismatched, what to change on the substrate, machine, or product part, and how to confirm the route is fixed.
Where the mismatch usually comes from
Tags are how Estimator narrows a route when more than one path is possible. Tags only block a path when the substrate, the machine, and the product part disagree on which Tag they carry. Compatibility also depends on sheet size, weight, and machine limits — Tags are one layer, not the only one. The table below pairs the customer-visible symptom with the surface where the cause shows up and the fix that resolves it.
Symptom | Check (where to look) | Fix (action) | Verify (what you'll see) |
Estimator returns "No valid combinations" after adding Tags. | On the quote, open Issue analysis. Read the route that was attempted and the Excluded machines section to see which machines were filtered out. | Open Print Machines, the relevant substrate in Substrates, and the product part. Apply the same Tag to all three, or remove the Tag from the part if the route should not be restricted. Apply Changes. | Recalculate the quote. Issue analysis now shows a valid route and the Excluded machines section no longer lists the press you expected. |
A press you expect is hidden from the route. | Open Issue analysis on the quote and read the Excluded machines section. The reason names the Tag mismatch. | Open Print Machines, find the press row, and either replace its Tag with the route Tag the substrate carries or add the route Tag alongside the existing one. Apply Changes. | Recalculate the quote. The press now appears in the assigned route in Issue analysis and the price breakdown shows a print line on that machine. |
Too many machines remain available and the route picks the wrong one. | Open Print Machines and look for machines or substrates with no Tags at all. Empty Tags act as wildcards and widen the route. | Add a specific Tag to the path that should be restricted (substrate plus matching press plus matching product part). Apply Changes. | Recalculate the quote. Issue analysis shows the narrower assigned route and the Excluded machines section now lists the wildcard machines you wanted to filter out. |
A Tag match exists but the route still fails. | Tags are only one layer of compatibility. Open Issue analysis and read the Excluded machines section for the real reason (sheet size, weight, step type, or run speed). | Open Print Machines and adjust the limit that excluded the press — sheet size, weight range, step type, or run speed — so it accepts the spec. Apply Changes. | Recalculate the quote. The press is no longer in the Excluded machines section and the route uses it. |
A press from the wrong site or production path is being chosen. | Open Print Machines and read the Tags on the press, the substrate, and the product part. Compare to the site or path the quote should use. | Apply route-specific Tags consistently to every relevant substrate, press, and product part — and remove site-wrong Tags from anything that should not be reachable. Apply Changes. | Recalculate the quote. Issue analysis shows the assigned press is on the intended site or path and the Excluded machines section lists the wrong-site press with a Tag-mismatch reason. |
A small shop spent time tagging everything and routes still fail. | Open Print Machines, Substrates, and the product part and look at how many Tags each carries. If most rows carry several Tags, the setup is over-narrowed. | Remove Tags from rows that do not need routing restrictions; leave Tags empty when the path has no alternatives that need filtering. Apply Changes. | Recalculate the quote. Issue analysis shows a valid route and the price breakdown returns to its expected shape. |
Worked example 1 — XL105 vanishes from a Folded Leaflets route
Northgate Press quotes a 10,000-run Folded Leaflets job on Silk 115gsm SRA1. The operator expects XL105 to print the job, but Issue analysis on the quote assigns HP Indigo and the price breakdown shows a much higher print line than the shop is used to seeing for this spec.
Diagnosis: Open Issue analysis on the quote. The Excluded machines section lists XL105 with the reason that the substrate carries no Tag matching the offset route. The SRA1 row was edited last week and the offset-route Tag was removed by mistake.
Fix: Open Substrates and find the SRA1 row (the heavier of the two SRA1 rows in Northgate Press' substrate table — Silk 115gsm SRA1). Add the Tag that XL105 also carries. Apply Changes.
Verify: Recalculate the quote. Issue analysis assigns XL105 as the print machine and the Excluded machines section no longer lists it. The print line on the price breakdown drops from the digital band back to the offset band.
Worked example 2 — A Folded Leaflets job routes to a small-format press
Northgate Press quotes a 2,000-run Folded Leaflets job. The Canon Wide large-format press is being chosen even though the operator expects HP Indigo or XL105 to take the job. The price breakdown shows a wide-format print line that the shop does not normally see for leaflets.
Diagnosis: Open Print Machines and read the Tags on Canon Wide, HP Indigo, XL105, and the Folded Leaflets product part. Canon Wide carries no Tags at all, so it is matching every route. HP Indigo and XL105 carry a Tag that the Folded Leaflets product part does not.
Fix: Open Print Machines, find the Folded Leaflets product part, and add the Tag that HP Indigo and XL105 already carry — or remove the wildcard state on Canon Wide by adding a wide-format-only Tag to it. Apply Changes.
Verify: Recalculate the quote. Issue analysis assigns HP Indigo (or XL105 for larger runs) as the print machine and the Excluded machines section lists Canon Wide with the Tag-mismatch reason. The print line on the price breakdown returns to the expected band.
What if this didn't fix it?
If the same Tag is present on the substrate, the press, and the product part, the machine's physical limits all accept the spec, and Issue analysis still shows the press in the Excluded machines section, the issue is in the calculation path rather than setup. Open a support request and include: the estimate ID, the substrate name, the press name, the Tags applied, and the reason Issue analysis gave. See Why a print machine is not selected for a quote for adjacent missing-press symptoms before opening the support request.
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