POST query to add new item in repeatable component

@update

Even if I get all values and remove existing in my PUT request, there is still error
{'data': None, 'error': {'status': 400, 'name': 'ValidationError', 'message': 'This attribute must be unique', 'details': {'errors': [{'path': ['sources', '0', 'link'], 'message': 'This attribute must be unique', 'name': 'ValidationError'}]}}}
link is set as unique string in strapi, I think its a bug

in schema.json:
` “sources”: {
“type”: “component”,
“repeatable”: true,
“component”: “source.source”
}

components/source/source.json
“attributes”: {
“link”: {
“type”: “string”,
“required”: false,
“unique”: true
}
`