Getting ISG_SERVICE_EXECUTION_ERROR frequently in 12.1.3
{
"ISGServiceFault" : {
"Code" : "ISG_SERVICE_EXECUTION_ERROR",
"Message" : "Error while executing service",
"Resolution" : "System error, please see service log trace for details",
"ServiceDetails" : {
"ServiceName" : "PWASSHRWS",
"OperationName" : "GET_TA_SHIFT_DATA",
"InstanceId" : "0"
}
}