Cannot delete document because of update conflict

Deleting a doc which has other revisions is done:
curl -X DELETE http://couchhost:5984/couchdb/docid\?rev\=rev_number

This helped me when getting
{"error":"conflict","reason":"Document update conflict."}

First, since your code looks correct as is, check that your params are in fact being sent.

Otherwise, you should check if a revision is marked as deleted:

curl -X GET http://127.0.0.1:5984/kina/  \ 04ce1239166b841ae8a317897ec45b11?revs_info=true{  "_id":"04ce1239166b841ae8a317897ec45b11",  "_rev":"3-bc27b6930ca514527d8954c7c43e6a09",  "_revs_info":  [   {    "rev":"3-bc27b6930ca514527d8954c7c43e6a09",    "status":"available"   },   {    "rev":"2-eec205a9d413992850a6e32678485900",    "status":"deleted"   },   {    "rev":"1-967a00dff5e02add41819138abb3284d",    "status":"available"   }  ]}

To get rid of the deleted versions, you have to use _purge. For example:

curl -X POST http://127.0.0.1:5984/kina/_purge/ \     -H "content-type:application/json" \     -d ’{"7341477ce373f9cc76f351e598001cdd":           ["2-5c7fb5dfeaf6f7cea149922fa1cdaf96"]        }’{  "purge_seq":1,"purged":  {    "7341477ce373f9cc76f351e598001cdd":    ["2-5c7fb5dfeaf6f7cea149922fa1cdaf96"]  }}

This is not a direct answer, but, to some people like me that were coding too late and thought the query parameter was named _rev instead of rev, just remove that underscore.

(I actually had to go as far as to enable couchdb debug logging to compare the http request received by couchdb when sent from fauxton vs. my app)