• Cycle Count and Physical Inventory - Many companies rely on these to find inventory discrepancies.  While these methods can keep inventory levels more accurate, they cannot identifying sources of attrition and scrap without additional work.  However, companies looking to keep costs down, may use these methods to identify components with the greatest attrition problems.  Once they identify a problem part, they can use the subsequent methods to identify sources and reduce or eliminate attrition. 
• Spot counting components upon kit completion - If companies count components upon kit completion, they will immediately know which kits are responsible for the attrition and scrap.  While it doesn't specifically highlight the cause, it does narrow it down and make it much easier to make improvements.  This process increases in value if the parts are separated by work center.  Ideally, users would be able to choose which parts are counted and which are left for cycle counting.
• Process review - Companies should review the production processes for work centers responsible for attrition.  Companies should give special attention to identify when the attrition is isolated to a single job or across multiple jobs.  Processes that consistently exceed attrition expectations, regardless of the job, should be reviewed and updated or result in an increase in charges to the customer.

Additional methods (if applicable)

• Employee review - If needed, companies may need to review the practices of specific employees.  This is made easier when defects and shortages can be connected with specific employees. 
• Machine Information - If available, machine consumption information can be an invaluable tool for identifying attrition and scrap.  If done real-time, this may also identify bad feeders, nozzles, programming, etc.