If you face any issue related to jobwork section,follow these steps
Step1 Go to job work configurations under inventory tab in feature/options
Step 2 Now please check all required options are enabled for jobwork and save changes
Step 3 Also in user under configurations,check user rights,if you have proper to add or modify invnetory voucher entry for jobwork and view jobwork reports
Step 4 Also you can cross check the voucher entry you are doing for jobwork as all details are mentioned properly like part,item details,job id etc.
Step 5 Also if there is issue in stock quantity reflecting while voucher entry in jobwork,take backup of company and then under housekeeping option,run update master balances