Resource not currently part of this pool error + CAP + Node.js

resource-pool-error.pngmodified-pool-configuration.pngHi ,

As part of our development we created batch job which will call standard API in s/4 for creating planned orders.

And once its success it will update 2 tables in BTP.

However we have started getting Resource not currently part of this pool error after 60 planned orders. This is random issue that we are getting.

Any one has any idea about it. we already tried setting acquiretimeoutmills and max property under pool configuration.

Thanks

Fehmina