I am trying to load a large number of item references against a checklist.

This message works fine

<root>
	<session email="" alias="">
		<state bc_name="Checklist">
			<action name="data">
				<main>
					<row number="1">
						<cl_id dtype="int">26</cl_id>
					</row>
				</main>
				<checklist_reference>
					<row number="1">
						<activity_id in_var="" out_var="">
                            FT_ASSIST
                        </activity_id>
						<item_id >487099</item_id>
						<bo_search_keys>
							<item>
								<name>activity_id</name>
								<value>
                                    FT_ASSIST
                                </value>
							</item>
							<item>
								<name>item_id</name>
								<value>487099</value>
							</item>
						</bo_search_keys>
					</row>
				</checklist_reference>
			</action>
		</state>
	</session>
</root>

But it takes an increasingly long time to process. After as little as 50 rows, it takes a ludicrous 2 minutes per request, and grows as the size of the checklist increases.

I am guessing that the issue is due to data searching for records to update.
So I would like to use data-new, as the integration guide describes this as simply an extension of data, without the search.

So I tried:

<root>
	<session email="" alias="">
		<state bc_name="Checklist">
			<action name="data-new">
				<main>
					<row number="1">
						<cl_id dtype="int">26</cl_id>
					</row>
				</main>
				<checklist_reference>
					<row number="1">
						<activity_id in_var="" out_var="">
                            FT_ASSIST
                        </activity_id>
						<item_id >487099</item_id>
						<bo_search_keys>
							<item>
								<name>activity_id</name>
								<value>
                                    FT_ASSIST
                                </value>
							</item>
							<item>
								<name>item_id</name>
								<value>487099</value>
							</item>
						</bo_search_keys>
					</row>
				</checklist_reference>
			</action>
		</state>
	</session>
</root>

And I get an error: 

succeeded:false

Error Message:: The 'Name' field is mandatory.

I took a stab in the dark and specified the cl_name:

<root>
	<session email="" alias="">
		<state bc_name="Checklist">
			<action name="data-new">
				<main>
					<row number="1">
						<cl_name>RNZ Rego Reminder</cl_name>
					</row>
				</main>
				<checklist_reference>
					<row number="1">
						<activity_id in_var="" out_var="">
                            FT_ASSIST
                        </activity_id>
						<item_id >487099</item_id>
						<bo_search_keys>
							<item>
								<name>activity_id</name>
								<value>
                                    FT_ASSIST
                                </value>
							</item>
							<item>
								<name>item_id</name>
								<value>487099</value>
							</item>
						</bo_search_keys>
					</row>
				</checklist_reference>
			</action>
		</state>
	</session>
</root>

And now I get error:

succeeded:false

Error Message:: Column 'Type' is Mandatory.

And at this point I am stuck. I don’t know what type is referring to. I am starting to suspect that this is attempting to create a new checklist, not update an existing one. So, perhaps I am fundamentally misunderstanding data-new. Can it add a new row to an existing checklist without searching the existing rows, or does the searching that the data action does refer to the search for the checklist header?

Either way, I am very keen for a way to speed this up. I need a way to apply a checklist to a large number of individual items, and I can’t see any other way that I can reference a list of items against a checklist. Can I add them to a project and reference the project? What is a project?