When I was testing OLMIS-6476, I noticed that if one enters an incorrect date in the If Modified Since header, the request results in the Internal Server Error.
Obtain the administrator's access token.
Make any request to the GET orderables endpoint, using the If-Modified-Since header.
Enter an incorrect date in the If-Modified-Since header, e.g. Tue, 12 Aug 2019 08:45:16 GMT (It was in fact Monday, not Tuesday).
The request returns an Internal Server Error.
Bad request should be returned and information that the provided date is incorrect.