You can use DIVSOHCLE to close multiple orders for whatever your parameter is, such as a range of order numbers, a certain customer, orders witch a specific backordered item, etc.

The simple call is 

Call DIVSOHCLE('order number here',1) From TRTVENCDE.

You can stick this in a for loop or even use a pattern match inside the part where the order number goes, although I've never tried that. Of you can provide some more context about how the orders are linked I can write some script here for you that might do the trick.

That worked perfectly, out of curiosity, is there any documentation on the TRTVENCDE script anywhere to know what options are available. 

what does the second parameter (1) do?

and is there any way to set the closing reason?

Hi Daniel,

The entry point, TRTVENCDE,  is describe in the Online help center: online-help.sageerpx3.com/.../