Function POST

Returns Promise<
    | NextResponse<{ error: string }>
    | NextResponse<
        {
            lines: (
                {
                    purchaseOrderLine: {
                        rawMaterial: { code: ...; id: ...; name: ...; unitOfMeasure: ... };
                    } & {};
                } & {}
            )[];
            purchaseOrder: {
                id: string;
                number: string;
                orderDate: Date;
                supplier: {
                    addresses: {
                        city: string
                        | null;
                        country: string | null;
                        street: string | null;
                    }[];
                    code: string;
                    email: string
                    | null;
                    id: string;
                    name: string;
                    phone: string | null;
                };
            };
        } & {},
    >,
>