# Assert In
Asserts that the element identified by a given expression matches at least one item from a given list.
Parameters
Name | Type | Required? | Description | Default value |
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Expression | Expression | Yes | Path to the element to be compared with the items in the list; for example payload.productId . |
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Value | String | Yes | The items that the specified element is to be compared with. Click anywhere in the field, enter the first item, then click the + icon to add further items. Alternatively, you can enter the items as a comma separated list. | |
Type | Selection list | No | The data type of the value. If you do not specify a data type, the values are compared as strings. Select one of the following values:
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Mode | Selection list | No | Select one of the following values:
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all |
Level | Selection list | No | Select error or warning. Specifies whether, if the assertion fails, it should be considered an ‘error’ or just a ‘warning.’ A warning does not trigger alerts, such as email or text messages. | error |
Modifier | Selection list | No | Select not to negate the assertion; the assertion is considered verified if it does not pass. | None |
Execute if item exists | Selection list | No | Select true or false. If true, the assertion is evaluated only if the element exists. This is useful when the element does not always exist. | false |
Stop test if fails | Selection list | No | Select true or false. If true, the test is immediately stopped if the assertion fails. | false |
Assertion comment | String | No | An optional comment for information. |