My name is Hideaki Hagiwara in Japan.
I tried to create Counter Document at Order and Invoice.
But I can not create Counter Document with "Error: : Price list cannot be changed because the invoice contains product lines" message.
I think that it may be influence of IDEMPIERE-1597.
I made a patch.
But I do not know whether this patch is best or not.
Please check my patch.
I think that is good improvement.
So, I think that I should change a timing to set Price List in Counter Document.
Thank you for reading.
And sorry for my poor English.