JMeter recorded sample failing on rerun - jmeter

Question

I recorded my project website workflow on Jmeter. But On rerunning the recorded samples, all the samples having POST request are failing. I am unable to figure out why the same samples which were passing during recording, are failing on re-run.
Below is request of one of the samples which is failing:
Recorded sample request which passed:
POST https://example.com/live/v1/dashboards/promo_pa/ds/promo_program_dimensions
POST data:
{"query":"promo_program_dimensions.filterby(program_master_id = 'GOGGLE').filterby(dimension_name = 'channel').groupby(dimension_value).aggregate(count(dimension_value) as count).orderby(dimension_value+)"}
[no cookies]
Request Headers:
Connection: keep-alive
Referer: https://example.com/live/v1/dashboards/promo_pa/
Accept-Language: en-US,en;q=0.5
DNT: 1
Accept: */*
X-Requested-With: XMLHttpRequest
Content-Type: application/json
Accept-Encoding: gzip, deflate, br
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0
Content-Length: 216
Host: example.com
Sampler Result:
Thread Name:
Sample Start: 2018-02-22 17:32:44 IST
Load time: 93
Connect Time: 58
Latency: 93
Size in bytes: 647
Sent bytes:1095
Headers size in bytes: 645
Body size in bytes: 2
Sample Count: 1
Error Count: 0
Data type ("text"|"bin"|""): text
Response code: 200
Response message: OK
Response headers:
HTTP/1.1 200 OK
Server: nginx
Date: Thu, 22 Feb 2018 12:02:44 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 2
Connection: keep-alive
Cache-Control: no-cache, no-store, must-revalidate, public, max-age=0
Set-Cookie: live=.eJxNj11vgjAYhf_K0muzMLJdSOIFC6yBQJmuiO1Nw0cdtB0zUEAw_nfRZcbLN2_Oc85zAoGNHA9B9mlDF1gn8JQBCwTm8VD8xH0h3J7CjymFfk92vszHZZklxzpdr1bgvABBBKHrMA-x-MvdzEFVZbzRI1gAtm94WwJLNx2fr6q4wymWr9RRiuJ8iJJtRRLyQsytouJdULwREUQKJfGAkvBWkrfNnulfyes7IhTxQCGqiLkeIqeQaAqn0EElxa5B8feEoK-IkFesDLFnUMd-C4e_zVXBa13p8TntdMn0eODAqjulHj4PY8lua6RwOV6TXcubm8is2XP273q-AI7Dam4.DXBC5A.CJMLbN0B4HC4U8703ZQS50K00lk; HttpOnly; Path=/live
HTTPSampleResult fields:
ContentType: text/html; charset=utf-8
DataEncoding: utf-8
Request of the same sample which is failing on re-run:
POST https://example.com/live/v1/dashboards/promo_pa/ds/promo_program_dimensions
POST data:
{"query":"promo_program_dimensions.filterby(program_master_id = 'GOGGLE').filterby(dimension_name = 'channel').groupby(dimension_value).aggregate(count(dimension_value) as count).orderby(dimension_value+)"}
Cookie Data:
live=.eJxNj11vgjAYhf_K0muzuE4uJPHCBNZgaB0O1Pam4aOu5WsGCqMY__uYy4yXJ2_O857nAvw1cTyC-PsaucC-gKcE2MCHwzmroj7L3Z6htzFGm54eN0VqljI5DHUcrFbgOgP-FiHX4R7h0Ye7m4qlSkSjDZgBfmpEK4Gtm05MSWV3OK5YgR3XohXJcR4tyCgVzvdTSi0WUoshOt86HiRhcHuSts2J669C1HcEgdhgJ10wx3shI4a02uUYRiMNpSIwGFguCxyuzYR6ZaEs8SH4xp9_m1Umaq20eY47Lbk2ZwHsuivLh8vDWHrcz2O0NL_NrhXNTWTS7AX_d73-AAjCaeE.DXBNjA.Fy0Fs7zpVKg-f1qSbAljATOn64E
Request Headers:
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 216
Host: example.com
User-Agent: Apache-HttpClient/4.5.3 (Java/1.8.0_161)
Sampler Result:
Thread Name: Liberty 1-1
Sample Start: 2018-02-22 18:24:46 IST
Load time: 26
Connect Time: 0
Latency: 26
Size in bytes: 709
Sent bytes:868
Headers size in bytes: 652
Body size in bytes: 57
Sample Count: 1
Error Count: 1
Data type ("text"|"bin"|""): text
Response code: 400
Response message: BAD REQUEST
Response headers:
HTTP/1.1 400 BAD REQUEST
Server: nginx
Date: Thu, 22 Feb 2018 12:54:46 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 57
Connection: keep-alive
Cache-Control: no-cache, no-store, must-revalidate, public, max-age=0
Set-Cookie: live=.eJxNj1tvgjAAhf_K0mezGAcPkvjg0q7B0DKciO1Lw6WGcpuBwizG_z50mfHx5ORcvgvw1hS6FIvPNUbAuYCXBDjAW5xPWR0OWYEGjj_GGG8GdtiUqVnmSXRu4mC1AtcZ8HyMERQuFeEX2k7BSiWy1QbMgDi2ssuBo9teTkplj3JS85JAZLOaFqQILTrmihT7SaU23zGbYzb3obugu-A-knbtUejvUjaPCh9Wio7vFY22ikBm0SKrCeSlDwOL79I3OpajjwOLRTRnUWh4jSz28_dZZbLRSpvXuNe50OYkgdP0VfXkPJ1lh_08xktzS_adbO8gE-YgxT_r9Rcq0WoP.DXBPFg.4Rll1tgU0GdWHWyE73uLkKM8z9c; HttpOnly; Path=/live
HTTPSampleResult fields:
ContentType: text/html; charset=utf-8
DataEncoding: utf-8
Response Data:
{"error": "Failed to authenticate user for data access."}
I have a login sample before this which passed successfully, So user has logged-in successfully before this sample.
I have used
HTTP Cache Manager, HTTP Cookie Manager and HTTP Header Manager. HTTP Cookie Manager will manage the session automatically. Still i am getting authentication error.
i have used the default settings for the sample i.e. "Redirect Automatically" and "Use KeepAlive". I am using JMeter 3.3
Appreciate any pointers.

Answer 1

In the "successful" request you have the following HTTP Headers:
X-Requested-With: XMLHttpRequest
Content-Type: application/json
In the "failing" one you have:
Content-Type: application/x-www-form-urlencoded
So my expectation is that you need to add HTTP Header Manager as a child of the "failing" request and configure it to send Content-Type header with the value of application/json