problem-In Time Series Algorithm predication is wrong if Sales value is negative
i have data for more than 3 years ,
sample data like
Due to negative value my prediction for next month is wrong. Please tell me how I can handle this problem. Negative values come due to sales return in zone.
Any body from Microsoft can help me. it is is very urgent.
Thanks a lot for replay.
but using help of this blog also this problem not solve.
is this problem can we solve using "Seasonal Decomposition of Time Series by Loess".
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