order issue in external services

Hi all,

There is a issue while  creating a maintenance order for the external service scenario, the material allotted for this activity is

is issued directly to the stores,so they want the stock to be reserved for certain period.So for this drawback

they don't maintaining order ,don't settling the cost with reference to maintenance order and they  wanted the

cost to capture equipment wise and functional location wise .is there any setting that controls the goods issue.

Please throw some light on this.

Thanks in advance,

-Regards,

Balaji