GI to scrap posts to storage type 999

Hi Hurus,

When we do a GI to scrap Mvt 551, the storage type 999 shows value -1. How to process further to clear storage type 999? If you try to create the TO for this movement the system gives message "you have not selected any data fro the material document no. xxxxxxxx". Please advice what will be the next process to procedd with scraping in WMS.

Any help is greatly appreciated.

Thanks,

KHAN