why it is in display? Are you min quality server?
Do chnages in customing client, save TR and transport TR to quality system.
As needed select check box of negative stock for your plant(valuation area and then plant and the for SL) in OMJ1 t.code and also slect check box of negative stock perimitted in processing parameters segment in OBY6 t.code for your company code and save.
More chcek link:
Negative stocks are allowed for special stocks if negative stocks have been activated in the valuation area and for the special stock concerned in the plant. You do not have to activate negative stocks in the material master record for each special stock.
So the settings in customizing for the storage location and also in the material master are not relevant for special stock types. If negative stocks are allowed in the plant and in general for the
special stock type then negative stock can be created. The only way to prevent this is to de-activate this for the special stock type at the plant level. The flag for the storage location and in the
material master is only relevant for anonymous plant stocks and not for special stocks.
In OMJ1, select the relevant plant line (neg stocks allowed flag should be set) and double click the 'Plant' folder to open it. This will display the options for negative special stocks.
I hope this can help.