
Consider the following example that has the Purchase Order data object as the header and the Order Details data object as the line items:

If you define a line item filter at the Order ID node, the sales representative receive orders details only if the corresponding purchase orders are present in the device. Otherwise, the line items details of the Order Details node are not sent to the device. The remaining node details (Created date, Created time and Status) are sent to the device.
By creating a filter at the line items, you can avoid unnecessary data being sent to the client. This is useful, in particular, if the data is being sent to a handheld, which is limited in its memory capacity.
When defining line item filters, you can make use of operators like equal to, greater than, lesser than and so on. We recommend that you make use of the equal to operator for defining the rules as much as possible. Using operators other than equal to may impact the performance of the system.