Quantity available in Item adjustment with batch tracking

Quantity available in Item adjustment with batch tracking

Hi! I'am trying to make a quantity adjustment for an item with positive phisical existences... I have a batch with 3 units in it...
But when i try to adjust to let the item with 2 existences it says that i don't have enough available quantity to adjust... 
To give you context, the path of creation was:

1. Create the item
2. Use the item in a purchase order
3. Create the purchase recieve for that order
4. Attempt to adjust
(I never made a invoce or something like that)

If you need any more information just ask... I need to solve this fast