This occurs when the Local LU has not been properly specified for the CCIAPPC Client. Refer to the section entitled Enabling CCIAPPC To Find The Local LU in the appropriate configuration guide in the APPC Product Configuration Guides section for the SNA product in use.
For other problems refer to the section entitled Error Reporting and Diagnostics in the appropriate configuration guide in the APPC Product Configuration Guides section for the SNA product in use.