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Is there a way to validate a Salesforce id, maybe using RegEx? They are normally 15 chars or 18 chars but do they follow a pattern that we can use to check that it's a valid id.

Thanks in advance!

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You can validate an ID’s length, be it 15 or 18 by using this method. This method will validate possible characters existing with an ID using regular expressions.

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 static public String validateId(String Idparam) {

        String id = String.escapeSingleQuotes(Idparam);

        if((id.length() == 15 || id.length() == 18) && Pattern.matches('^[a-zA-Z0-9]*$', id)) 


    return id;


    return null;


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