If your return was successfully filed using NETFILE, then you would have gotten a confirmation number from the CRA.

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Hi I am first time tax filler I am not able to file my tax using netfile in the end it showed me error in turbotax CRA result code 15 why!! also CRA customer service is very slow they don't help to file tax or open account what to do??

@ishan8360 That error Code is from CRA. If you are filing for the first time you might have to Print & Mail your return to CRA. CRA will not accept an electronic filling if they do not have anything for you on their record.