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 # Interface fortran::syscaddregionf

 Last update: 17.07.2025 

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**Definition**: `syscSystemCouplingF.fi` (line 177)

Provide an interface to add a region.

## Members

- [syscaddregionf](interfacefortran_1_1syscaddregionf.md#interfacefortran_1_1syscaddregionf_1a76e91c428f581da4c6695c7a66027839)

## Public functions

<a id="interfacefortran_1_1syscaddregionf_1a76e91c428f581da4c6695c7a66027839"></a>

### Function syscaddregionf

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```fortran
type(syscerrorf) function syscaddregionf(reg)

```

Provide a function to add a region to be used in a coupled analysis.

If this region has already been added, then this call will have no effect.

If a different region with the same has already been added, then an error will be returned.

If the region name contains invalid characters, then a runtime eror will be thrown.

**Parameters**:

- **reg**: - region to be added

**Returns**:

a `SyscErrorF` type for error checking.

**Parameters**:

- regreg

**Return type**: type([syscerrorf](structfortran_1_1syscerrorf.md#structfortran_1_1syscerrorf)) function