JCA can not find the service exported by tuxedo according to error message,TPENOENT you posted. So please check below items:
1) whether the connection between JCA and tuxedo domain is established, you can get this information in ULOG and also tuxedo0.log.
2) check the TOUPPER service is advertised and exported by tuxedo domain.
It is helpful to post the tuxedo configurations (ubb, dubb).