Error while uploading RDL files using Rest API to Power BI Service

[arha]

Hello Team,
We are trying to use Imports - Post Import In Group - REST API (Power BI Power BI REST APIs) | Microsoft Learn API to post RDL files to Power BI Workspace. But it's failing with ImportUnsupportedOption error. Though it's working as expected for PBIX files.
Here are the screenshots for the same on Postman.
Header:

Body:

Params:

Has anyone else faced the same issue and got it to work more effectively with any other Rest APIs?

Thanks