# Maximum delay

This constraint allows you to define the **maximum permitted delay** beyond the end of a visit’s time window.

The **Delay penalty** constraint must be used at the same time.

**Format:** HH:MM or HH:MM:SS

**Depends on:**

* Opening time
* Closing time
* Penalty per late hour

**Incompatible with:**

* Delay tolerance

**Example**

If a customer’s visit time window ends at **17:00** and the **Maximum delay** is set to **00:10**, the resource is allowed to arrive up to **10 minutes late**, that is, no later than **17:10**.

Any arrival beyond **17:10** will not be accepted, and delays within this limit will be penalized according to the **Penalty per late hour** constraint.


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