Have you activated quality management and have you checked for open inspection lots against the material if so?
Also in your LS26 view do you have a positive balance of QI stock in some other storage type? If you have some positive balance in another storage type simply use LT01 to move the positive balance in to your 922 bin, this will offset the negative making both entries disappear. Then you can use LT01 to move the positive balance of unrestricted stock into 999/lost&found and clear it with LI21.
(first confirm there are no open inspection lots against the stock) Also have you tried pulling a positive quantity of Q stock from 999 and moving it into 922 to offset the negative? If you try this make sure the system will allow clearing of the negative created in 999 with LI21 before assuming its working. If you have QM active you will more then likely receive the error "
Change the inspection stock of material XXXXXXXXXX in QM only.
If all of the above do not help, try MIGO - transfer posting / mvmnt type 322 to move the positive balance of unrestricted to Q status (offsetting the negative) but just make sure there is no open inspection lot or Q status stock sitting in some other storage type first.
