My app is nearly finished, the one and only thing missing is a button which Onselect will save the items from my gallery (a SharePoint list) to another SharePoint list.
When I try this, I get an error that there is an incompatible type (table).
Basically when I press the button, all the content from List A needs to be added to List B.
You will need to make a ForAll loop for your gallery.
Like that you will write records to the new SP list instead of a table type.
Then use Patch to write the data to another SP-list.
Here you have more information how to use the Patch statement:
Patch doesn't work in a ForAll, excuse me my bad.
This Forum Post is about the same issue you face: