Patch:8947373:Linux x86:11.5.10.2:results in invalid package OKS_BILLING_PUB

Hi,
After applying patch :8947373, the following package is invalid:

OKS_BILLING_PUB

File versions :
/* $Header: OKSPBILS.pls 115.44.11510.3 2006/12/07 22:42:20 hvaladip ship $ */
/* $Header: OKSPBILB.pls 115.205.11510.35 2009/10/13 09:37:08 cgopinee ship $ */

SQL> alter package APPS.OKS_BILLING_PUB compile body;

Warning: Package Body altered with compilation errors.

SQL> sho error
Errors for PACKAGE BODY APPS.OKS_BILLING_PUB:

LINE/COL ERROR
-------- -----------------------------------------------------------------
2888/5   PL/SQL: Statement ignored
2888/19  PLS-00302: component 'BILLING_INTERFACE_ST_DATE' must be declared

Thanks & Regards
phani bhaskar