# \#free-time-and-demurrage
**URL:** https://community.dockflow.com/tag/free-time-and-demurrage/7.md
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## [Why does my country-level rule still not match when the step differentiates on port?](https://community.dockflow.com/t/why-does-my-country-level-rule-still-not-match-when-the-step-differentiates-on-port/175)
**Author:** [@dockflow](https://community.dockflow.com/u/dockflow)\
**Replies:** 0\
**Last updated:** [November 6, 2026, 3:22pm UTC](https://community.dockflow.com/t/why-does-my-country-level-rule-still-not-match-when-the-step-differentiates-on-port/175 "2026-11-06T15:22:13Z")
Check that the differentiators you ticked on Monitor dwell are the ones you actually want. Every differentiator you add makes rules more specific, so a rule set at country level will not match if the step also differen…
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## [Why is my free-days rule not applying when the configuration exists but the value is empty?](https://community.dockflow.com/t/why-is-my-free-days-rule-not-applying-when-the-configuration-exists-but-the-value-is-empty/174)
**Author:** [@dockflow](https://community.dockflow.com/u/dockflow)\
**Replies:** 0\
**Last updated:** [November 6, 2026, 3:21pm UTC](https://community.dockflow.com/t/why-is-my-free-days-rule-not-applying-when-the-configuration-exists-but-the-value-is-empty/174 "2026-11-06T15:21:56Z")
A configuration can exist with the free-days value never entered. Dockflow treats an empty value the same as no rule. Open Dwell Center and check the combination in question actually carries a number. Example A config…
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## [Why does a rule in Dwell Center read as missing when the shipment has no carrier?](https://community.dockflow.com/t/why-does-a-rule-in-dwell-center-read-as-missing-when-the-shipment-has-no-carrier/173)
**Author:** [@dockflow](https://community.dockflow.com/u/dockflow)\
**Replies:** 0\
**Last updated:** [November 6, 2026, 3:21pm UTC](https://community.dockflow.com/t/why-does-a-rule-in-dwell-center-read-as-missing-when-the-shipment-has-no-carrier/173 "2026-11-06T15:21:39Z")
If Carrier is one of your differentiators, then the carrier is part of what a rule is matched on. A shipment with no carrier does not use a carrier-agnostic rule - it simply matches nothing, so a rule you can see in Dw…
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## [Which Monitor dwell ticks define a rule match, and where do I set the free days?](https://community.dockflow.com/t/which-monitor-dwell-ticks-define-a-rule-match-and-where-do-i-set-the-free-days/172)
**Author:** [@dockflow](https://community.dockflow.com/u/dockflow)\
**Replies:** 0\
**Last updated:** [November 6, 2026, 3:21pm UTC](https://community.dockflow.com/t/which-monitor-dwell-ticks-define-a-rule-match-and-where-do-i-set-the-free-days/172 "2026-11-06T15:21:21Z")
Two places, and both have to be right. 1. The shape of the rule is set on the automation step Monitor dwell. This is where you choose what a rule is allowed to differ by: Country, Port, Incoterm, Reefer, Dangerous Good…