The Gating suitability result rates each place on the model for its suitability for an injection location.
The Gating suitability result is produced by the Gate Location analysis when you use the Advanced Gate Locator algorithm. The Advanced Gate Locator algorithm minimizes the flow resitance when determining the best gate position for the first and only injection location. You can specify prohibited gate nodes, to block the solver from placing an injection location in the prohibited areas.
If there are no prohibited gate nodes on the model, then the Gate Location analysis rates the gating suitability throughout the part, and creates a copy of your study to place one gate in the best location found during the analysis. This new study is ready for a Fill analysis.
The best areas shown on the result do not necessarily represent a good solution (high quality part, or high confidence of fill), but rather the best one for the case at hand using the selected material.
If the injection location is not suitable due to design constraints, consider the other blue regions in the Gating suitability result when placing a different injection location. Use a Fill analysis to check the suitability of these injection locations.