Http://www.grahakseva.com/complaints/252163/docomo-proactive-sim-error
A search using https://www.google.com found the above link above that suggests how to contact Tata Docomo for assistance.
I checked sim is new 3day back take please solved my problem
Get it to your service provider's customer care unit. They'll fix it for you
SOURCE: my number is showing proactive sim command error? what is d soliution
You could have a defective SIM card, try that first.
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