# AsyncClient suddenly throws a lot of "Error Code -6: Command rejected" exceptions

**URL:** <https://discuss.aerospike.com/t/asyncclient-suddenly-throws-a-lot-of-error-code-6-command-rejected-exceptions/3936>\
**Category:** Java Client\
**Created:** [March 11, 2017, 10:23pm UTC](https://discuss.aerospike.com/t/asyncclient-suddenly-throws-a-lot-of-error-code-6-command-rejected-exceptions/3936 "2017-03-11T22:23:26Z")\
**Posts on this page:** 1\
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**Author:** ![pgupta](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.aerospike.com/pgupta/32/2351_2.png) [@pgupta](https://discuss.aerospike.com/u/pgupta)\
**Post date:** [March 13, 2017, 7:02am UTC](https://discuss.aerospike.com/t/asyncclient-suddenly-throws-a-lot-of-error-code-6-command-rejected-exceptions/3936/2 "2017-03-13T07:02:11Z")

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Error code -6: ? [Error Codes | Aerospike Documentation](http://www.aerospike.com/docs/dev_reference/error_codes.html)`For future write requests which specify 'BIN_CREATE_ONLY', request fail because any of the bin already exists.` Are you running into that in your application code?

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