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Failed to rename assets using Python

I'm trying to rename an asset using Python. Here is my code:

import unreal as ue

ar = ue.AssetRegistryHelpers.get_asset_registry()

ad= ar.get_asset_by_object_path('/Game/Path/To/MyAsset')

rnd = ue.AssetRenameData(asset=ad.get_asset(), new_package_path='/Game/Path/To/', new_name='MyNewAsset')

rnds = ue.Array(ue.AssetRenameData)


at = ue.AssetToolsHelpers().get_asset_tools()


Unfortunately, this gives me error:

DataValidation: Error: /Game/Path/To/MyNewAsset contains invalid data.

DataValidation: Error: Data validation FAILED. Files Checked: 1, Passed: 0, Failed: 1, Skipped: 0, Unable to validate: 0

But the .uasset file is generated under the physical folder.

What am I missing here?

Product Version: UE 4.21
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asked Apr 19 '19 at 12:15 PM in Packaging & Deployment

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As far as I know, you should use the file name with the virtual extension of it, so instead of


try to use


Let me know if it works?

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answered Apr 19 '19 at 03:24 PM

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avatar image kakyoism Apr 20 '19 at 07:59 AM

Thanks for stepping in. After that, Unreal tells me:

LogPackageName: Error: DoesPackageExist: DoesPackageExist FAILED: 'MyNewAsset' is not a standard unreal filename or a long path name. Reason: Path should start with a '/'

LogAssetTools: Error: /Game/Path/To/MyAsset - /Game/Path/To/MyAsset.MyAsset to /Game/Path/To/MyNewAsset.MyNewAsset.MyNewAsset.MyNewAsset: Name may not contain the following characters: .

Couldn't rename 'MyAssetClass /Game/Path/To/MyAsset.MyAsset'.

Seems that Unreal does not like "periods' in names.

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