presence of delivery order in ATP Check

Hi Gurus,

We are seeing the presence of an unknown order for one of our products in CO09 for #60

This is leading to wrong calculations of 'Confirmed Qty' of #120, when it should be 120=60 = just 60.

So with the current stock of 90 units, +30 should be shown as available ATP Qty.

However it's showing 90-120 = -30 as available ATP Qty.

Normally we used to resolve this by running /SAPAPO/AC06, which unfortunately is not working now (its not giving any error when we run it in production systems)

I also did CCR for Sales Orders, Stocks but no inconsistencies were found. There are no stuck queues either. Also ran OM17.

Pls advise how could we solve this & get rid of this order?

Thanks.

Regards

Sooraj