Add more detail about what indicator type/threat was not valid.
Add more detail about what indicator type/threat was not valid.

korrosivesec/crits,jhuapl-marti/marti,cfossace/crits,ckane/crits,Magicked/crits,Lambdanaut/crits,ckane/crits,korrosivesec/crits,dreardon/crits,cfossace/crits,korrosivesec/crits,cfossace/crits,jhuapl-marti/marti,dreardon/crits,lakiw/cripts,jhuapl-marti/marti,ckane/crits,lakiw/cripts,dreardon/crits,cfossace/crits,Lambdanaut/crits,jhuapl-marti/marti,Lambdanaut/crits,Magicked/crits,dreardon/crits,ckane/crits,Magicked/crits,Magicked/crits,lakiw/cripts,korrosivesec/crits,lakiw/cripts,Lambdanaut/crits