unissuable
/juːˌnɪsˈeɪbəl/Definitions
1. adjective
Impossible to issue or obtain, especially due to lack of information or evidence.
“The police were unable to issue a warrant due to the unissuable nature of the evidence.”
2. adjective
Impossible to isolate or separate from other things.
“The scientist struggled to isolate the pure compound due to its unissuable properties.”