# \[Critical\] Can't start a session because of validation error for "misallowed" objects

**URL:** <https://forums.unrealengine.com/t/critical-cant-start-a-session-because-of-validation-error-for-misallowed-objects/820029>\
**Category:** Issues and Bug Reporting\
**Tags:** fortnite-creative, unreal-editor-for-fortnite, bug-report, question, fortnite\
**Created:** [March 25, 2023, 5:54am UTC](https://forums.unrealengine.com/t/critical-cant-start-a-session-because-of-validation-error-for-misallowed-objects/820029 "2023-03-25T05:54:03Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![ElLanzeh](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@ElLanzeh](https://forums.unrealengine.com/u/ElLanzeh)\
**Post date:** [March 25, 2023, 5:54am UTC](https://forums.unrealengine.com/t/critical-cant-start-a-session-because-of-validation-error-for-misallowed-objects/820029/1 "2023-03-25T05:54:03Z")

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I can’t start a session because of a message said that there’s an error in validation:

LogValkyrieValidation: Error: [16] Found disallowed object type /Game/Balance/Physics/Materials/PhysData\_Foliage.PhysData\_Foliage LogValkyrieValidation: Error: [16] Found disallowed object type

I have lost more than 20 real hours of work and I have not found any solution. If there is a solution, (which maybe doesn’t exist yet), could someone tell me, please, what should I do? If you would be so kind, could you tell me how to find those disallowed files somehow? Since I know what they are by their ID (1435328942899192312893.asset), but I don’t know how to find them to eliminate them and be able to continue with my great project of an XL island.

Many thanks for everything.

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**Author:** ![Kwarkjeparkje](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Kwarkjeparkje](https://forums.unrealengine.com/u/Kwarkjeparkje)\
**Post date:** [March 27, 2023, 3:43pm UTC](https://forums.unrealengine.com/t/critical-cant-start-a-session-because-of-validation-error-for-misallowed-objects/820029/2 "2023-03-27T15:43:11Z")

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I got this to and dont know how to fix this 🥲

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**Author:** ![TeamZMig](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@TeamZMig](https://forums.unrealengine.com/u/TeamZMig)\
**Post date:** [March 27, 2023, 6:59pm UTC](https://forums.unrealengine.com/t/critical-cant-start-a-session-because-of-validation-error-for-misallowed-objects/820029/3 "2023-03-27T18:59:08Z")

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> [@ElLanzeh](#):
>
> a session because of a message said that there’s an e

Same here

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**Author:** ![CODEHATERZ](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@CODEHATERZ](https://forums.unrealengine.com/u/CODEHATERZ)\
**Post date:** [March 29, 2023, 4:53pm UTC](https://forums.unrealengine.com/t/critical-cant-start-a-session-because-of-validation-error-for-misallowed-objects/820029/4 "2023-03-29T16:53:01Z")

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same here have lost several worlds because of the /game/balance/physics/Materials/PhysData\_Foliage.PhysData\_Foliage error

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**Author:** ![TeamZMig](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@TeamZMig](https://forums.unrealengine.com/u/TeamZMig)\
**Post date:** [March 29, 2023, 10:15pm UTC](https://forums.unrealengine.com/t/critical-cant-start-a-session-because-of-validation-error-for-misallowed-objects/820029/5 "2023-03-29T22:15:34Z")

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delete ATHENA\_PROP\_PLANT all that pop up with that name. it work dor me

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**Author:** ![HalcyonKnight96](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/halcyonknight96/32/924312_2.png) [@HalcyonKnight96](https://forums.unrealengine.com/u/HalcyonKnight96)\
**Post date:** [March 30, 2023, 12:21am UTC](https://forums.unrealengine.com/t/critical-cant-start-a-session-because-of-validation-error-for-misallowed-objects/820029/7 "2023-03-30T00:21:43Z")

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@here [When importing buildings directly from fortnite in flying man mode the project does not pass validation and does not start giving error messages - #12 by HalcyonKnight96](https://forums.unrealengine.com/t/when-importing-buildings-directly-from-fortnite-in-flying-man-mode-the-project-does-not-pass-validation-and-does-not-start-giving-error-messages/832301/12)