***
title: "StockLevelService"
generated: true
---------------
The StockLevelService is responsible for managing the stock levels of ProductVariants.
Whenever you need to adjust the `stockOnHand` or `stockAllocated` for a ProductVariant,
you should use this service.
```ts title="Signature"
class StockLevelService {
constructor(connection: TransactionalConnection, stockLocationService: StockLocationService, configService: ConfigService)
getStockLevel(ctx: RequestContext, productVariantId: ID, stockLocationId: ID) => Promise;
getStockLevelsForVariant(ctx: RequestContext, productVariantId: ID) => Promise;
getAvailableStock(ctx: RequestContext, productVariantId: ID) => Promise;
updateStockOnHandForLocation(ctx: RequestContext, productVariantId: ID, stockLocationId: ID, change: number) => ;
updateStockAllocatedForLocation(ctx: RequestContext, productVariantId: ID, stockLocationId: ID, change: number) => ;
}
```
### getStockLevel
\
RequestContext, productVariantId: ID, stockLocationId: ID) => Promise<StockLevel>`} />
Returns the StockLevel for the given [ProductVariant](/current/core/reference/typescript-api/entities/product-variant#productvariant) and [StockLocation](/current/core/reference/typescript-api/entities/stock-location#stocklocation).
### getStockLevelsForVariant
\RequestContext, productVariantId: ID) => Promise<StockLevel[]>`} />
### getAvailableStock
\RequestContext, productVariantId: ID) => Promise<AvailableStock>`} />
Returns the available stock (on hand and allocated) for the given [ProductVariant](/current/core/reference/typescript-api/entities/product-variant#productvariant). This is determined
by the configured [StockLocationStrategy](/current/core/reference/typescript-api/products-stock/stock-location-strategy#stocklocationstrategy).
### updateStockOnHandForLocation
\RequestContext, productVariantId: ID, stockLocationId: ID, change: number) => `} />
Updates the `stockOnHand` for the given [ProductVariant](/current/core/reference/typescript-api/entities/product-variant#productvariant) and [StockLocation](/current/core/reference/typescript-api/entities/stock-location#stocklocation).
### updateStockAllocatedForLocation
\RequestContext, productVariantId: ID, stockLocationId: ID, change: number) => `} />
Updates the `stockAllocated` for the given [ProductVariant](/current/core/reference/typescript-api/entities/product-variant#productvariant) and [StockLocation](/current/core/reference/typescript-api/entities/stock-location#stocklocation).