Not able to provision dynamic attribute using REST API

[KirtiGupta]

Using code

httpParams:{"givenName":"${user.firstname}","surname":"${user.lastname}","mail":"${user.email}","extension_aeb9a5a25f784bd992690e2d1b34f548_countrycode":"${requestAccessAttributes.get('customproperty11')}","DisplayName":"${user.displayname}","extension_aeb9a5a25f784bd992690e2d1b34f548_employeeId":"${user.employeeid}","identities":[{"signInType":"emailAddress","issuer":"xeroxb2cdev.onmicrosoft.com","issuerAssignedId":"${user.email}"}],"passwordProfile": {"password": "****", "forceChangePasswordNextSignIn": false},"passwordPolicies":"DisablePasswordExpiration" }, httpHeaders:[Authorization:${access_token}, Content-Type:application/json], httpContentType:application/json, successResponses:[statusCode:[200, 201, 204, 205]]]]]

This extension_aeb9a5a25f784bd992690e2d1b34f548_countrycode":"${requestAccessAttributes.get('customproperty11')} is setting as null

Though in logs it is being calculated

tchDefaultAttributeValues
2023-02-10 12:02:23,758 [Thread-140] DEBUG services.SaviyntCommonUtilityService - Sql = Select epattr from Endpoint_attributes epattr where epattr.endpoints.id = :epid and epattr.requestType=1 and epattr.defaultvalue is not null and epattr.defaultvalue <> ''
2023-02-10 12:02:23,759 [Thread-140] DEBUG services.SaviyntCommonUtilityService - Endpoint Attrs = [com.saviynt.ecm.identitywarehouse.domain.Endpoint_attributes : 1263]
2023-02-10 12:02:23,799 [Thread-140] INFO services.SaviyntCommonUtilityService - defaultattrval = [XeroxCountryCode:CAN]

[sk]

Try below, Assuming customproperty11 is Dynamic Attribute name, If not replace it with Dynamic attribute name that you try to provision

${requestAccessAttributes.customproperty11}

[rushikeshvartak]

${requestAccessAttributes.get('ResourceOrganizationName')}

 ResourceOrganizationName - Should be dynamic attribute name 

if it does not work then try with account column