BPC work status setup ... APPROVALORG, a little parameter often overlooked

When setting up workstatus in BPC there is a little web parameter to setup, APPROVALORG, it's often overlooked because generally one doesn't manage more than one hierarchy for an entity ... in our case we have 3 hierarchies and hierarchy number 3 (H3) is the one used to manage read/write permissions and thus the natural candidate for controlling workstatus.
So the web parameter APPROVALORG should not be H1 in this case, or you'll get some "strange" errors, but H3, and of course H3 will also have the owner property correctly filled.

An example:

Some useful tutorials can be found on SDN.