warning in subscriptions api for git synced projects

Author: andrewjschuang

docs-v2/pages/rest-api/index.mdx

@@ -157,8 +157,8 @@ The response from the request above will have a shape that looks like:
 Pipedream uses conventional HTTP response codes to indicate the success or
 failure of an API request:
 
-- Codes in the `2xx` range indicate success. 
-- Codes in the `4xx` range indicate an error that failed (e.g., a required parameter was omitted). 
+- Codes in the `2xx` range indicate success.
+- Codes in the `4xx` range indicate an error that failed (e.g., a required parameter was omitted).
 - Codes in the `5xx` range indicate an error with Pipedream's server.
 
 ## Accounts
@@ -1073,6 +1073,10 @@ DELETE /sources/{id}
 
 ## Subscriptions
 
+<Callout type="warning">
+  The Subscriptions API is currently incompatible with projects that have [GitHub Sync](https://pipedream.com/docs/projects/git) enabled. To [trigger another workflow](https://pipedream.com/docs/code/nodejs#invoke-another-workflow), use `$.flow.trigger` instead.
+</Callout>
+
 ### Listen for events from another source or workflow
 
 You can configure a source or workflow to receive events from any number of