Problem with LOV of Field Subinventory in Form GMETTMTX

Hi, i am having problems when i am trying to create a material transaction in the "transaction material" subform (GMETTMTX) for an ingredient, if the "allow negative balances" flag in form "organization parameter" is set then, when i am in "transaction material" subform of "batch details" form, it let me to put any subinventory in the field "subinventory", this is ok but in the LOV doesn't show me the subinventory unless it have a positive balance.

If i uncheck the "allow negative balances" flag, the when i return to the "transaction material" subform, and i introduce a subinventory with not on-hand inventory, then the form raises the error "Unexpected User Exit Error (3), coming from QT_UE.Query Tree".