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TPS2511-Q1: About VIA of TPS2511-Q1

Part Number: TPS2511-Q1
Other Parts Discussed in Thread: TPS2511

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There are the description to place a via in center of solder mask in TPS2511-Q1's datasheet.
However my customer need good radiation.
So they place four via as attached document.
Are there the problem in this design?
Or  are there any other good design?

TPS2511-Q1.pdf

Best regards,
Yokota