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Excellent question, Senthilnathan. If the process is consistently generating high percentage of defects, it may pass the stability test and is considered to be in statistical control. However, it might fail badly on the Capability Assessment if customer is unhappy with the defect level. Now, I have used the word "might" because the unhappiness of customer depends on the competitive scenario or the novelty of the solution. To provide you an example, there is an app called "Skyscanner" for which you can compare prices for the same flights over different platforms. It is an aggregator of aggregators. In US, customers of Skyscanner are delighted because they are saving in most of their flights or stay although, the tool is not perfect and does show erroneous results sometimes. If Skyscanner is having a defect rate which is unusually high (compared to other aggregator apps) but still makes customer happy due to lack of competition as an aggregator of aggregators, its process may be considered stable as well as capable. By the way, Skyscanner works in India too and is worth a try ")