Performance in term of Interfaces SAP with WMS (Number of idoc KO)

Hello,

I am looking about performance data in term of number of issues between SAP and WMS.(Idocs failing)

We have been building complexe interfaces with SAP and 4 WMS 6 years ago.

What is for you a good performance ?

Less than 1% of Idocs with issue ? 0;1%, 0,01% ?...

Regards,