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Question by Stucko_Stuck · Dec 12, 2010 at 04:17 PM · errorsyntax-errorbce0004

What does BCE0004: Ambiguous reference error mean?

What does BCE0004: Ambiguous reference error mean? I got this error after copy pasting some files in the Assets folder.

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Answer by Eric5h5 · Dec 12, 2010 at 04:26 PM

You get that when it's unclear what you're referring to, hence "ambiguous reference." i.e.,

import System;
var foo = Random.value;

In this case, since the System namespace is imported, Unity has no way of knowing whether you mean System.Random or UnityEngine.Random. So you have to make it clear:

import System;
var foo = UnityEngine.Random.value;
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avatar image Stucko_Stuck · Dec 14, 2010 at 02:37 PM 1
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Thanks,

I found out that there was a duplicate script (an Assembly script from the data folder for the built standalone version) that I copied into the assets folder.

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Answer by Mike 3 · Dec 12, 2010 at 04:25 PM

It means it can't work out which overload of the function to call, generally because you're giving it a variable which doesn't match either overload properly, but can implicitly be casted to both, e.g:

var test : double = 0;
var parsed = parseInt(test);

will throw an ambiguity error, as it can't work out if you're trying to call parseInt(String) or parseInt(float)

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avatar image Eric5h5 · Dec 12, 2010 at 04:28 PM 0
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Actually that code is fine.

avatar image Mike 3 · Dec 12, 2010 at 05:18 PM 0
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Fixed (well, unfixed)

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Answer by the-Grumbleputty · Mar 11, 2014 at 02:04 PM

I've also had this error turn up when I've used a variable name that was a reserved Javascript keyword, such as "name". A list of reserved words can be seen here: http://www.quackit.com/javascript/javascript_reserved_words.cfm

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