creation of secondary indexes due to heavy flow of messages in ecc smq2

Hi gurus,

So we are facing smq2 issues from last 15 days in Ecc system due to some Time Limit Exceed and some times Object is Locked by the user xxxx

So finally we decided to go for creating seconday indexes in Ecc side , So here my question is there any thing required from Pi side while creating

Secondary indexes why i am asking this question is there is no issues From PI end after reaching to target(ECC) system only messages got stucking

in smq2 and facing issues .Below is the interface details.

Plz reply back .

Regards

Madhu