Tx errors reported by SM

Hi everyone,
if anyone has detected in his SM Tx error value (in General View of SM in PRIZM), please give me some numbers. I have seen it today and regarding total Tx value send by SM the % of Tx error is between 0,07 up to 0,3%. Is it OK or NOK?
Has anybody experience, how is the influence of that errors at customers opinion?

All best

Krzysiek - ptysiek