Try this - put the values for response in quotes
eval response=case(rsppcode LIKE "%200%", "200", rsppcode LIKE "%401%", "401",
rsppcode LIKE "%403%", "403", rsppcode LIKE "%404%", "404",
rsppcode LIKE "%409%", "409", rsppcode LIKE "%504%", "504",
rsppcode LIKE "%500%", "500", rsppcode LIKE "%422%", "422",
rsppcode LIKE "%550%", "550", rsppcode LIKE "%", "Others" )
| timechart span=5min dc(field1) by response
I also recommend that you use sitimechart instead of timechart for summary indexing. Look here for more info
Finally, I am not sure how the title of this post relates to the question - am I missing something?
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