The 10.1.3.3.1 SOA Bundle Patchset (MLR) are cumulative patches on SOA Suite and are released every 2-3 months. The latest is MLR#18 (Patch 8372118) and all AIA 2.0.1 implementations should upgrade to this for better system stability. This has more than 300 fixes on the base platform.
Recently after upgrading the system to MLR 18, we observed an issue where CustomerPartyEBS is timing Out after invoking CreateCustomerPartyPortalProvABCS. This is not easy to debug as you can not find the instance of CreateCustomerPartyPortalProvABCS process in BPEL console and there is not much information in log files as well. The fix for this issue is mentioned in Metalink Note 880473.1.
This is also liked from AIA Implementation Resources on Oracle Wiki
