PI Tags created by custom function on sub inventory doubles the tag quantity after the adjustment

Physical Inventory Tags were created by custom function based on the procedure INV_PHY_INV_LOVS.process_tag() on sub inventory and locator. Inventory created after the adjustments doubles the tag quantity, packs into an LPN and additionally created negative quantity for same locator. The described behavior is not expected by the PI Tags were created by the Standard PI Count Function (MSCA).