Auto fix Guide
A lot of what the validators find can be fixed with one click. The rest needs a person, either because the right answer is not obvious from the asset alone or because getting it wrong would cost you real work.
Warning: Without source control, some of these fixes cannot be taken back. Check the files out in Perforce, or commit what you have in Git, before you run a big batch.
A fixable row in the panel has a Fix button, showing the proposed value where there is one. From the Content Browser, right-click the asset and use Fix Issues, which lists the issue types found on your selection.
The asset is renamed where it stands, and the engine leaves a redirector at the old path so nothing that references it breaks.
| Rule | What the fix does |
|---|---|
missing_prefix |
Adds the correct prefix. Example: MyTexture → T_MyTexture. If the name would collide with an existing asset, a numeric suffix is appended. |
duplicate_prefix |
Removes the extra prefix. Example: BP_BP_MyActor → BP_MyActor. |
missing_suffix |
Appends the required suffix. Example: SC_Ambient (SoundConcurrency) → SC_Ambient_SC. |
missing_allowed_suffix |
Appends the first allowed suffix for the class. Example for World assets: L_Town → L_Town_P. |
wrong_case |
Capitalizes the first letter of each name segment after the prefix. Example: T_cross_fire → T_Cross_Fire. |
junk_name |
Strips the junk word and applies the correct prefix to what remains. Only fixes when a meaningful name part exists after the junk word. Example: New_BossEnemy → BP_BossEnemy. |
| Rule | What the fix does |
|---|---|
wrong_folder |
Moves the asset to the best matching allowed folder under the current scan root. Example: a Material in /Game/Characters/ moves to /Game/Materials/. Creates redirectors at the old path. |
These change the texture's import settings and save the asset.
| Rule | What the fix does |
|---|---|
texture_wrong_srgb |
Sets the sRGB flag to the correct value for the detected texture type (on for color, off for data). |
texture_wrong_compression |
Sets CompressionSettings to the expected value for the texture type (e.g. TC_NormalMap for _N textures). |
texture_wrong_group |
Sets LODGroup to the expected LOD group for the texture type (e.g. TEXTUREGROUP_UI for _UI textures). |
| Rule | What the fix does |
|---|---|
mesh_nanite_policy |
Enables or disables Nanite on the mesh according to the configured NanitePolicy. Saves the asset. |
| Rule | What the fix does |
|---|---|
stale_redirector |
Runs UE's Fix Up Redirectors on the redirector asset, the same thing you get by right-clicking it in the Content Browser and choosing Fix Up Redirectors. Deletes the redirector and updates all references to point to the new path. |
Three of the Blueprint rules fix themselves by renaming the variable:
| Rule | What the fix does |
|---|---|
bp_bool_no_prefix |
Adds b prefix to the boolean variable name. Example: IsAlive → bIsAlive. |
bp_bool_is_pattern |
Removes the redundant verb prefix. Example: bIsDead → bDead. |
bp_var_not_pascal_case |
Capitalizes the first letter of the variable name. Example: health → Health. |
Warning: A variable rename updates every reference inside that same Blueprint. It does not touch other Blueprints or C++ that read the variable by name. Those you fix yourself, and the compiler will not always tell you.
Clicking Fix on two hundred rows is not a plan. Batch Fix applies one rule's fix to everything currently visible in the panel, in one pass, with a review step first.
Note: Batch Fix works in both versions. The demo allows 5 auto-fixes per editor session, and one batch run counts as one of them no matter how many assets it touches.
The Fix All button in the panel toolbar becomes active when:
- All visible (filtered) results share exactly one Rule ID
- At least 2 of those results are auto-fixable
Use the rule filter dropdown to narrow results to a single rule, then click Fix All.
Before the dialog opens, ASV scans for potential conflicts and marks affected rows:
- Name collision. Something with the target name is already sitting at the destination.
- Path collision. For a move, the destination folder already holds that asset.
- Unsaved changes. The package has edits that are not on disk yet. Save it first.
A row in conflict turns orange and its checkbox goes dead; hover it to see why. The whole check runs again right before anything is written, so a conflict that appears while you were reading the dialog still gets caught.
The Batch Fix dialog shows all selected assets in a scrollable list:
- Results grouped by folder, and each folder header collapses
- Every row carries a checkbox, a status icon, the asset name with its full path on hover, the current value and the proposed one
- Search field to filter rows by asset name
- Select All / Deselect All buttons above the list
- Fix Selected stays disabled while nothing is ticked, and counts what is: Fix Selected (12)
Fixes apply one per frame. Each row updates its icon in real time (✓ = fixed, ✗ = failed). The button label tracks progress: Fixing… 12 / 47.
At the end you get a line in the dialog, Fixed 44 / 47, 3 skipped, and a toast. Closing the dialog refreshes the panel.
Undo behavior depends on the type of fix:
-
Property fixes, meaning texture sRGB, compression, LOD group and Blueprint variable renames, all go into one UE transaction. One
Ctrl+Ztakes the whole batch back. - Renames and moves touch the disk and do not undo with Ctrl+Z. The engine leaves a redirector at the old path, so references survive, but the rename itself stands. Source control is your undo here.
The demo allows 5 auto-fixes per editor session, and that is the only limit on fixing. A batch run spends one of the five however many assets are in it, so it pays to filter down to a whole rule and fix it in one go rather than clicking rows. Restarting the editor gives you five more.
| Rule | Why no auto-fix | How to fix |
|---|---|---|
name_pattern_mismatch |
There is no single correct name here, and the tool cannot guess what you meant | Rename in Content Browser |
non_ascii_name |
Transliteration is locale-dependent | Rename to an ASCII name |
folder_contains_unicode |
Same reason. Renaming a folder moves everything inside it. | Rename folder |
folder_not_pascal_case |
Same | Rename folder |
folder_disallowed_name |
Correct target folder depends on project structure | Rename/reorganize folder |
folder_in_developers |
Decision where to move it requires human judgement | Move asset to production folder |
texture_not_power_of_two |
Requires reimport from source at correct size | Reimport texture at power-of-two dimensions |
texture_exceeds_max_size |
Requires reimport or texture editor change | Reduce texture dimensions in the source and reimport |
bp_editable_missing_tooltip |
A meaningful tooltip can't be generated | Add tooltip in Blueprint variable details |
bp_editable_missing_range |
Valid range depends on game logic | Set ClampMin/ClampMax in variable metadata |
bp_var_config_flag |
Removing Config may break runtime behavior | Remove Config flag from variable properties |
bp_vars_uncategorized |
Categories are project-specific | Add categories to editable variables in Blueprint |
bp_var_atomic_type_name |
New name depends on variable meaning | Rename variable (e.g. ScoreFloat → Score) |
bp_var_redundant_context |
Which part of the name to remove depends on intent | Rename variable to remove class context |
var_array_not_plural |
Pluralization rules are language-specific | Rename array variable to plural form |
var_missing_type_name |
Correct type suffix depends on variable purpose | Rename variable to include type (e.g. HitResult) |
blueprint_compile_error |
Error must be understood and fixed in Blueprint editor | Open Blueprint, fix compilation errors, save |
blueprint_compile_warning |
Somebody has to look at it in the Blueprint editor. Usually a deprecated node. | Open Blueprint, review compile warnings, save |
mesh_no_collision |
Collision type and shape depend on gameplay use | Add collision in Static Mesh Editor |
mesh_no_lods |
LOD settings depend on performance budget | Set up LODs in Static Mesh Editor or via auto-LOD |