How to fetch fields/datatypes of Content Fragment Model(not content fragment) using Headless GET API in AEM?

@DEBAL_DAS After installing below new Packages, still getting same issue after adding 34 fields in AEM 6.5.12"aem-service-pkg-6.5.12.0-NPR-38144-B0002""cfm-graphql-index-def-1.0.3" Please suggest what needs to do?

@DEBAL_DAS  Are you able to see below datatypes (In screenshot) in AEM 6.5.9 as these are not available in AEM 6.5.8,Fragment Reference has been used in my project which is very important. Is there anyway to add more than 40 Fields in AEM 6.5.12. Any configuration change? Please let me know.  

@DEBAL_DAS :Can you please share link of AEM 6.5.9 or share Service package of AEM 6.5.9 as i am only see AEM 6.5.12 in software distribution. I am using free trial of AEM so please help here.  

@sunil_kumar_ : Please use latest version of AEM like 6.5.12 , may be older version was supporting but older version doesn't have Fragment reference, JSON Object, Tab Placeholder datatypes in CF model in above your screenshot . So please use AEM 6.5.12 and share your observation as it is blocking me...

@sunil_kumar_ : Any update on it ? @DEBAL_DAS : Have you debugged it, Why we are getting error after adding 39 fields on AEM 6.5.12. Is there any solution to add more than 40 fields in AEM with Service pack 6.5.12 ,as i am using AEM 6.5.12 using Service pack "aem-service-pkg-6.5.12.0".    

@sunil_kumar_ @DEBAL_DAS I am using AEM 6.5.12 using Service pack "aem-service-pkg-6.5.12.0" 

Hi @sunil_kumar_  I tried to add 40 singleLine text fields using simple characters without any underscore , at the time of adding 38 field it threw error. Please see my all fields in CF model in CRX .  

@Himanshu_Jain  There is no special character in my propertyName . Using simple characters and using underscore like this  "Page_CreatedBy".

 While adding 39 fields in Content Fragment Model then getting Error, Is there anyway to add more than 40 Fields in Content Fragment Model in AEM?Getting below Error.