2005 uio-gw9-l0_00 OID_TESTER-6-DO_TEST Got results from uio-gw9-l0, length: 1 (reqGetnext: true, vl: ) Jul 06 13:45:17 2005 uio-gw9-l0_00 OID_TESTER-6-DO_TEST Match: null, val: 1
This seems to indicate an OID was found below the one in question (i.e. 1.3.6.1.4.1.9.9.13.1.3.1.3.1.<something>) as getnext is true.
As short term solution I've removed tempInlet from the database
A much better solution is to remove the record from the netboxsnmpoid table as it otherwise will remove the OID for all devices.