Getting error Requested datasource Lead_Data_for_Training__dlm not found.
In Trailhead:
Build a Predictive Model in Model BuilderI got stuck in step 5.
- From the App Launcher, search for and select Data Cloud.
- In Data Cloud, click the AI Models tab to access Model Builder.
- Click Add Predictive Model. Model Builder opens.
- Select Create a binary model. Then click Next.
- Leave the default data space selected and select the Lead Data for Training DMO. This DMO contains historical lead data that your model will use for its training set. Then click Next. PLease help. How to fix this? #Salesforce Developer #Trailhead Challenges #Data Cloud
Hi Shivani,
This is a known issue tied to the data stream/datasource mapping not being fully processed yet in fresh Trailhead playgrounds, not something wrong on your end.
A few things to check and try, in order:
1. Go to Data Cloud > Data Streams and find the stream tied to Lead_Data_for_Training. Check its Last Refreshed status, if it's never run or is still processing, wait for it to complete, then retry Model Builder.
2. Go to Data Cloud > Data Model, search for Lead_Data_for_Training, and confirm it has a Category set and is actually mapped to a data source under the default Data Space. If the mapping is blank, that's the root cause, the DMO exists but has no linked datasource yet.
3. If your org has more than one Data Space, switch to a different one and back to default. This forces Model Builder to re-resolve the datasource reference and has fixed this exact error for others.
4. Hard refresh Model Builder (or open in incognito), since this screen sometimes caches a stale data model list from before the stream finished processing.
5. If it's still broken, the official Trailhead module itself documents a fallback for this exact scenario:
"If you can't find the Lead Data for Training DMO, use the Lead_Home DMO for the rest of this badge."
Source (official Trailhead unit):
https://trailhead.salesforce.com/content/learn/modules/predictive-outputs-from-model-builder/get-started-with-predictionsSo go to the Data Streams tab, click on the Lead_Home data stream, and continue the badge using Lead_Home instead. This is Salesforce's own sanctioned workaround, not a hack.
6. If none of that clears it, it's likely a playground provisioning issue on Salesforce's side. Use "Get Help" > "Report an Issue" directly on the module page so the Trailhead ops team can look at your specific playground.
Let me know which step gets you past it.
