This issue occurs when the following conditions are met:

• ALM-22004 DSG SCTP Link Fault is generated on the alarm console.
• A lot of the following error information is logged on the Unified Policy and Charging Controller (UPCC) for which ALM-22004 is generated:[sendDciRequest]Call Dci::dciSendMsg fail! errCode = -1[dbaprocess.cpp,1230]. For details about how to view log information on the UPCC,
  

The data service gateway (DSG) module is faulty. To resolve this issue, restart the DSG module identified by Module number and Remote location number in ALM-22004.