Thanks Omar. Then it must be a bug that I cannot edit fields in the Contact window. In fact there are a number of bugs with it, I'll report them individually. Or is there already a list of known bugs?
More explanation @Paul:
When the issue occurs, should see if restarting presence or lookup helps. If so - that is the issue and should be sorted. First need to ensure that that is the issue...
Hello!
You can mark it as closed as option. If document is connected with other documents you can not delete it so you will not be able to delete PO, as you will not be able to remove Goods receipt...