It may be noted that an error occurs when attempting POST login with API. The error may vary and may include one of the below:
"errorCode": -1,
"errorDescription": "mysqli error: [1135: Can't create a new thread (errno 35 \"Resource temporarily unavailable\"); if you are not out of available memory, you can consult the manual for a possible OS-dependent bug] in CONNECT(localhost, 'B1', '****', ORG1)\n"
"errorCode": -1,
"An exception occurred while executing 'SELECT o0_.ID AS ID_0, o0_.NAME AS NAME_1, o0_.IS_ENABLED AS IS_ENABLED_2, o0_.IS_SYSTEM AS IS_SYSTEM_3, o0_.IS_DELETED AS IS_DELETED_4, o0_.SYNC_LOCATIONS AS SYNC_LOCATIONS_5, o0_.LOCATION_ATTRIBUTE_NAME AS LOCATION_ATTRIBUTE_NAME_6, o0_.PRIMARY_LOCATION_ID AS PRIMARY_LOCATION_ID_7 FROM ORGANIZATION o0_ WHERE (o0_.IS_SYSTEM = 0) AND (o0_.IS_DELETED=false) ORDER BY o0_.NAME ASC': SQLSTATE[42S22]: Column not found: 1054 Unknown column 'o0_.IS_ENABLED' in 'field list'"
NOTE: This issue has been addressed in version 9.1 and upgrading is the suggested method of resolution.
For version 9.0, a hotfix was released to address this issue and is located on this related article about KACE GO.