| Priority | Description | MIL-STD-498 Description |
|---|---|---|
| 1 | Prevents end users from performing an essential task that results in work stoppages. The impact to project cost/schedule requires an immediate resolution and a special release may be necessary. | a.Prevent the accomplishment of an operational or mission essential capability |
| 2 | Adversely affects end users from performing an essential task. Significant impact to project cost/schedule with resolution needed within 3 weeks. | a. Adversely affect the accomplishment of an operational or mission essential capability and no work-around solution is known. |
| 3 | Hinders end users from performing an essential task or a capability is behind schedule. Impact to project cost/schedule with resolution needed within 6 weeks. | a. Adversely affect the accomplishment of an operational or mission essential capability but a work-around solution is known. |
| 4 | Minor impact to end users or is a capability being developed per schedule. Can be resolved per normal release schedule. | a. Result in user/operator inconvenience or annoyance but does not affect a required operational or mission essential capability. |
| 5 | An inconvenience or annoyance. Can be resolved as schedule and budget permits. | Any other effect |