Alpaca Bars API shows incorrect Volume

Considering the following API call:

And a subsampled result:

“t”: 1589428800,
“o”: 2.62,
“h”: 2.65,
“l”: 2.5,
“c”: 2.6,
“v”: 154908

This time stamp refer to May 14, 2020.

However, if I cross-validate with other source ,volume should be ~81K.

Why such a big difference?

Show incorrect candlestick, and missing data.

Thank you for the report. Please keep in mind that Data API is aggregate of 5 exchanges and does not necessarily match the fully consolidated data.

So does this mean it will be inaccurate and there is nothing I can do to fix it? I was wondering if purchasing the premium API package it will solve the inaccurate volume issues. Will it? @hitoshi