[Python] LinkedIn API: Authorization Error When Posting on Behalf of Organization

I’m developing an application that integrates with the LinkedIn API to post content on behalf of our organization. Despite being listed as a super admin and having the following OAuth 2.0 scopes:

• w_organization_social • rw_organization_admin • r_organization_social 

I’m encountering the following error when attempting to create a post:

com.linkedin.content.common.exception.BadRequestResponseException: denied by [resource: organizationUgcAuthorizations => responseStatus: DENIED]

'description' ='Write to post is denied due to lack of permission'
'input' ={}
'code' ='AUTH_DELEGATION_DENIED'


Additionally, the error code returned is AUTH_DELEGATION_DENIED, with the description: “Write to post is denied due to lack of permission.”

Steps Taken:

1. Confirmed that my LinkedIn application has the necessary scopes mentioned above.
2. Verified that I’m listed as a super admin for the organization.
3. Ensured that the access token is valid and includes the required scopes.
4. Attempted to post using the endpoint: https://api.linkedin.com/v2/ugcPosts. 


Are there additional permissions or configurations required to post on behalf of an organization using the LinkedIn API? Any insights or suggestions would be greatly appreciated.

Code :

organization_url = urn:lirganization:<company_id>

⸻

def post_it(self, title: str, content: str, image_url: str = None, scheduled_time: datetime.datetime = None):
if not self.access_token or not self.organization_urn:
raise Exception("Access token and organization URN must be set before posting content.")

post_data = {
"author": self.organization_urn,
"lifecycleState": "PUBLISHED",
"specificContent": {
"com.linkedin.ugc.ShareContent": {
"shareCommentary": {
"text": f"{title}\n\n{content}"
},
"shareMediaCategory": "NONE"
}
},
"visibility": {
"com.linkedin.ugc.MemberNetworkVisibility": "PUBLIC"
}
}

if image_url:
# First register the media asset
media_register_data = {
"registerUploadRequest": {
"recipes": ["urn:li:digitalmediaRecipe:feedshare-image"],
"owner": self.organization_urn,
"serviceRelationships": [{
"relationshipType": "OWNER",
"identifier": "urn:li:userGeneratedContent"
}]
}
}

# Register the media asset
media_register_response = self.client.action(
resource_path="/assets",
action_name="registerUpload",
action_params=media_register_data,
access_token=self.access_token
)

# Get the upload URL and asset URN
upload_url = media_register_response.value.get('uploadMechanism').get('com.linkedin.digitalmedia.uploading.MediaUploadHttpRequest').get('uploadUrl')
asset_urn = media_register_response.value.get('asset')

# Upload the image to the provided URL
image_data = requests.get(image_url).content
upload_response = requests.put(
upload_url,
data=image_data,
headers={"Content-Type": "image/jpeg"}
)

if upload_response.status_code != 201:
raise Exception(f"Failed to upload image: {upload_response.text}")

# Update post data with the media asset
post_data["specificContent"]["com.linkedin.ugc.ShareContent"]["shareMediaCategory"] = "IMAGE"
post_data["specificContent"]["com.linkedin.ugc.ShareContent"]["media"] = [{
"status": "READY",
"description": {
"text": content
},
"media": asset_urn,
"title": {
"text": title or content[:100]
}
}]

if scheduled_time:
post_data["lifecycleState"] = "DRAFT"
post_data["scheduledTime"] = int(scheduled_time.timestamp() * 1000)

response = self.client.create(
resource_path="/ugcPosts",
entity=post_data,
access_token=self.access_token
)

return response

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