# 503 Elastic APM Server Response

**URL:** <https://discuss.elastic.co/t/503-elastic-apm-server-response/181774>\
**Category:** Elasticsearch\
**Created:** [May 20, 2019, 9:27am UTC](https://discuss.elastic.co/t/503-elastic-apm-server-response/181774 "2019-05-20T09:27:36Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![anushshukla](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/anushshukla/32/46173_2.png) [@anushshukla](https://discuss.elastic.co/u/anushshukla)\
**Post date:** [May 20, 2019, 9:27am UTC](https://discuss.elastic.co/t/503-elastic-apm-server-response/181774/1 "2019-05-20T09:27:36Z")

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Please refer the below screenshot for the exact error response we got during the custom transaction API RUM event to APM server on page load.

 ![Screenshot%20from%202019-05-20%2014-51-27](https://us1.discourse-cdn.com/elastic/original/3X/e/0/e0134b3a07e0f1f3aa3cc8ef1165cf57ed7e9729.png)

Please help us in resolving this issue.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [June 17, 2019, 9:27am UTC](https://discuss.elastic.co/t/503-elastic-apm-server-response/181774/2 "2019-06-17T09:27:38Z")

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