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 # set\_default

 Last update: 02.04.2026 

<a id="ansys.meshing.prime.BCPair.set_default"></a>

#### *static* BCPair.set\_default(source\_zonelet=None, target\_zonelet=None, type=None)

Set the default values of the `BCPair` object.

**Parameters:**

**source\_zonelet: int, optional**

Id of source zonelet.

**target\_zonelet: int, optional**

Id of target zonelet.

**type: BCPairType, optional**

Option to specify boundary condition pair type.