If the PGE is part of a process flow and on completion chains onto another generic page, you will need to specify a NextPage parameter. The value of the parameters is the PageID/PageCode of the page to chain to. If you page needs to dynamically choose its next page, set the next page using Steps later on.

For handheld devices, you can chain to some internal functionalities:

stock_adjust - the screen for a ULD adjustment.

Requires the Barcode parameter to be passed in.

Can provide the ProgressToPGE parameter with the value of the PageID to be used to determine the NextPage for stock adjustment to chain to on completion.
packing_select - the screen to select a pack job / wave.

Requires the PackSlipNumber or WaveID parameter to be passed in.
receipting_select - the screen to select a receipt.

Requires the ShipmentNumber and ReceiptID parameter to be passed in.

When you are using PGE chaining, the Fetch and Query step types do NOT display data to the user. Instead they are used to forward data to the next page to prefill fields.

Example

After a user enters a shipment number for a receipt, you may chain to a page that displays a table of all of the RCPE lines for that receipt with a field to input the received quantity for each line as part of a custom receipting process.

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{
  ...
  "NextPage": 999,
  ...
}