diff --git a/docs/started-hello.md b/docs/started-hello.md
index 53e2ce4d..5c5e3a6a 100644
--- a/docs/started-hello.md
+++ b/docs/started-hello.md
@@ -201,6 +201,33 @@ Then run `cicero trigger --template helloworld@0.14.0.cta --sample sample.md --r
 ```
 13:47:35 - ERROR: Instance org.accordproject.helloworld.MyRequest#null missing required field input
 ```
+## Common Errors
+
+### Invalid or Missing Identifier
+
+This occurs when your model defines an identifier field but it is not included in `data.json`.
+Ensure all required fields defined in `model.cto` are provided in your JSON data file.
+
+### Missing `data.json`
+
+The `cicero draft` command requires a JSON data file.
+If your data file has a different name, specify it using:
+
+```bash
+cicero draft --data your-file.json
+```
+
+### Namespace Mismatch
+
+Ensure the `$class` value in your JSON matches the namespace and asset defined in `model.cto`.
+
+Example:
+
+```json
+{
+  "$class": "org.accordproject.template.MyClause"
+}
+```
 
 ## What Next?