To eliminate CRM

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These are fields by which you can identify a client/user - his id in the analytics system, phone number in call tracking, order or contract number. It is advisable to take care of the availability of keys for user stories at the audit stage. The table with Airplane user stories contains several million rows: about a million users at different stages of the funnel. This is not necessarily a million unique users - for many of them we simply did not find enough keys to combine into one story.
  
This may be due to both a human factor - for example, operators Brazil Telemarketing Data wrote down the phone number incorrectly, and to technical problems - for example, a replacement number on one of the pages did not work. Such errors lead to errors in the system data. They cannot be eliminated completely, but we constantly monitor and combat them. The error monitoring dashboard helps us with this - it shows the number of records in the database that correspond to one of the types of errors.



Ad even sends notifications when their share exceeds the acceptable level. An error monitoring dashboard is necessary to quickly respond to errors in the system (for example, lack of identifiers for linking). The system is constantly being improved to reduce the share of unconnected clients Lifehacks to increase the number of users System errors directly affect the percentage of connected users, so we have created action plans for each type of user.