raise PublishXmlValidationError in validate marks

openpype/hosts/tvpaint/plugins/publish/help/validate_asset_name.xml

@@ -8,7 +8,7 @@ Context of the given subset doesn't match your current scene.
 
 ### How to repair?
 
-Yout can fix with "Repair" button on the right. This will use '{expected_asset}' asset name and overwrite '{found_asset}' asset name in scene metadata.
+Yout can fix this with "Repair" button on the right. This will use '{expected_asset}' asset name and overwrite '{found_asset}' asset name in scene metadata.
 
 After that restart publishing with Reload button.
 </description>

openpype/hosts/tvpaint/plugins/publish/help/validate_marks.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<root>
+<error id="main">
+<title>Frame range</title>
+<description>## Invalid render frame range
+
+Scene frame range which will be rendered is defined by MarkIn and MarkOut. Expected frame range is {expected_frame_range} and current frame range is {current_frame_range}.
+
+It is also required that MarkIn and MarkOut are enabled in the scene. Their color is highlighted on timeline when are enabled.
+
+- MarkIn is {mark_in_enable_state}
+- MarkOut is {mark_out_enable_state}
+
+### How to repair?
+
+Yout can fix this with "Repair" button on the right. That will change MarkOut to {expected_mark_out}.
+
+Or you can manually modify MarkIn and MarkOut in the scene timeline.
+</description>
+</error>
+</root>

openpype/hosts/tvpaint/plugins/publish/validate_marks.py

@@ -2,6 +2,7 @@ import json
 
 import pyblish.api
 from avalon.tvpaint import lib
+from openpype.pipeline import PublishXmlValidationError
 
 
 class ValidateMarksRepair(pyblish.api.Action):
@@ -73,9 +74,34 @@ class ValidateMarks(pyblish.api.ContextPlugin):
                     "expected": expected_data[k]
                 }
 
-        if invalid:
-            raise AssertionError(
-                "Marks does not match database:\n{}".format(
-                    json.dumps(invalid, sort_keys=True, indent=4)
-                )
-            )
+        # Validation ends
+        if not invalid:
+            return
+
+        current_frame_range = (
+            (current_data["markOut"] - current_data["markIn"]) + 1
+        )
+        expected_frame_range = (
+            (expected_data["markOut"] - expected_data["markIn"]) + 1
+        )
+        mark_in_enable_state = "disabled"
+        if current_data["markInState"]:
+            mark_in_enable_state = "enabled"
+
+        mark_out_enable_state = "disabled"
+        if current_data["markOutState"]:
+            mark_out_enable_state = "enabled"
+
+        raise PublishXmlValidationError(
+            self,
+            "Marks does not match database:\n{}".format(
+                json.dumps(invalid, sort_keys=True, indent=4)
+            ),
+            formatting_data={
+                "current_frame_range": str(current_frame_range),
+                "expected_frame_range": str(expected_frame_range),
+                "mark_in_enable_state": mark_in_enable_state,
+                "mark_out_enable_state": mark_out_enable_state,
+                "expected_mark_out": expected_data["markOut"]
+            }
+        )