How can I create a talent profile - competency items with the help of REST APIs?

Summary:

I am trying to create a talent profile - competency items, below is the details

Using POST operation and below API query I am sending request

https://fa-eups-dev1-saasfaprod1.fa.ocs.oraclecloud.com/hcmRestApi/resources/11.13.18.05/talentPersonProfiles/300000031434764/child/competencySections/300000034817186/child/competencyItems/

with body:

{

"ContentItemId": 300000018515784,
"Competency": "test",
"OtherCompetency": null,
"ReviewDate": null,
"ProficiencyRatingId": 300000008683001,
"ProficiencyRatingCode": "4",
"ProficiencyRatingDescription": "4- Reviewer",
"PerformanceRatingId": null,
"PerformanceRatingCode": null,
"PerformanceRatingDescription": null,
"YearsOfExperience": null,
"InterestLevel": null,
"EvaluationType": "Attester",
"ReviewerName": "Ankele, Donald",
"Reviewer": null,
"YearAcquired": null,
"YearLastUsed": null,
"ReviewerApproved": null,
"ReviewStartDate": null,
"ReviewEndDate": null,
"AssessmentYear": null,
"ReviewActive": null

}

when I try to send request getting below error

"Attribute Proficiency Rating in view object CompetencySectionVO_competencyItems_CompetencySectionVOToCompetencyItemVO_CompetencyItemVO cannot be set."