# C0136: Ambiguous use of name 'VisuFbInputBase2' \[ERROR\] **URL:** \ **Category:** CODESYS\ **Tags:** pfc200, codesys\ **Created:** [July 11, 2024, 10:23am UTC](https://www.wago.community/t/c0136-ambiguous-use-of-name-visufbinputbase2-error/1082 "2024-07-11T10:23:40Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![donmanto](https://avatars.discourse-cdn.com/v4/letter/d/e495f1/32.png) [@donmanto](https://www.wago.community/u/donmanto)\ **Post date:** [July 11, 2024, 10:23am UTC](https://www.wago.community/t/c0136-ambiguous-use-of-name-visufbinputbase2-error/1082/1 "2024-07-11T10:23:40Z")
When building a a project I get the following error message. not able to find where the location of this error. ![image](https://us1.discourse-cdn.com/flex016/uploads/wago/original/1X/69aa1bfc71e8669aaae69237ec883b9e13e6e28f.png) How to identify and rectify this error. thank you ---
**Author:** ![AdamReeve](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/adamreeve/32/59_2.png) [@AdamReeve](https://www.wago.community/u/AdamReeve)\ **Post date:** [July 11, 2024, 6:04pm UTC](https://www.wago.community/t/c0136-ambiguous-use-of-name-visufbinputbase2-error/1082/2 "2024-07-11T18:04:26Z")
Check your Library Manager. This error usually means you have two conflicting libraries installed to your project and the fb name “VisuFbInputBase2” is appearing in both of them. ---
**Author:** ![PatrickR](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/patrickr/32/262_2.png) [@PatrickR](https://www.wago.community/u/PatrickR)\ **Post date:** [July 11, 2024, 6:41pm UTC](https://www.wago.community/t/c0136-ambiguous-use-of-name-visufbinputbase2-error/1082/3 "2024-07-11T18:41:51Z")
I think this is a bug and you can find this library twice in the placeholder dialog of the library manager … as a workaround you can set both to the same version. ---
**Author:** ![NicolasF](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/nicolasf/32/816_2.png) [@NicolasF](https://www.wago.community/u/NicolasF)\ **Post date:** [July 17, 2024, 5:13pm UTC](https://www.wago.community/t/c0136-ambiguous-use-of-name-visufbinputbase2-error/1082/4 "2024-07-17T17:13:55Z")
Hi, I got this error, but with a Compact Controller: ![2024-07-17_13h13_13](https://us1.discourse-cdn.com/flex016/uploads/wago/original/1X/e7934eabd47bdbc41d9a73ed2e591cb55871fa1e.png) ---
**Author:** ![David](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/david/32/830_2.png) [@David](https://www.wago.community/u/David)\ **Post date:** [July 17, 2024, 8:22pm UTC](https://www.wago.community/t/c0136-ambiguous-use-of-name-visufbinputbase2-error/1082/5 "2024-07-17T20:22:15Z")
Check if your library versions are the same as the highlighted. If they are the same, then try clean and rebuild the project. If that doesn’t work create a new project but choose the standard project. ![image](https://us1.discourse-cdn.com/flex016/uploads/wago/original/1X/a160c916889c7d60696ab99bcea3391ee9dd60c2.png) ---
**Author:** ![PatrickR](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/patrickr/32/262_2.png) [@PatrickR](https://www.wago.community/u/PatrickR)\ **Post date:** [July 18, 2024, 7:27am UTC](https://www.wago.community/t/c0136-ambiguous-use-of-name-visufbinputbase2-error/1082/6 "2024-07-18T07:27:10Z")
Hi, In this case, the WagoSysPlainMem is too new. As a workaround, you should change the version from 1.5.3.1 to 1.5.3.0. The cause is the latest devices and libaries package, which should only be used in conjunction with FW27. Activate “Sandbox light mode” during setup is recommended". Here you can find further informations: [https://www.youtube.com/watch?v=nYVTcsaUgFI](https://www.youtube.com/watch?v=nYVTcsaUgFI) ---
**Author:** ![NicolasF](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/nicolasf/32/816_2.png) [@NicolasF](https://www.wago.community/u/NicolasF)\ **Post date:** [July 18, 2024, 1:21pm UTC](https://www.wago.community/t/c0136-ambiguous-use-of-name-visufbinputbase2-error/1082/7 "2024-07-18T13:21:11Z")
Yes, I understand and it is working now, but it is append on a new standard (after insert a 6.2.0.1 9301) or new empty (after insert a 6.2.0.1 9301) or new CC100 template project. It would be good to correct the proper links on a WAGO device, as it can be discouraging for a first attempt. ---
**Author:** ![PatrickR](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/patrickr/32/262_2.png) [@PatrickR](https://www.wago.community/u/PatrickR)\ **Post date:** [July 18, 2024, 1:29pm UTC](https://www.wago.community/t/c0136-ambiguous-use-of-name-visufbinputbase2-error/1082/9 "2024-07-18T13:29:41Z")
could you please open a new topic for that?