[Home](./index.md) > [bitburner](./bitburner.md) > [WarehouseAPI](./bitburner.warehouseapi.md) > [cancelExportMaterial](./bitburner.warehouseapi.cancelexportmaterial.md)
## WarehouseAPI.cancelExportMaterial() method
Signature:
```typescript
cancelExportMaterial(
sourceDivision: string,
sourceCity: string,
targetDivision: string,
targetCity: string,
materialName: string,
amt: number,
): void;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| sourceDivision | string | |
| sourceCity | string | |
| targetDivision | string | |
| targetCity | string | |
| materialName | string | |
| amt | number | |
Returns:
void