Alarm Tool will not run another alarm if there is activity running on alarm
document.

So register such one which depends on tag which is passed to alarm working
scripts.

Thanks to this new alarm will not be registered until current one will finish.

It can be done later.

Setup quantity unit on tax.

Also allow to tax everything.

Users has no possibility to pay.

Users has no possibility to pay for now.

For example Trade Model Rules do not define trade phase on them, so let other
checks to apply it or not.

So there is no need to require it on line.

Fix condition name.

Not all Open Sale Orders have lines, but all have to be migrated.

Arrow and usual categories are set on Open Sale Order.

Let the cluster take decision about how activities will be running.