The version of an article that is published online is considered the final and complete version. Even though it is possible to correct this version, our policy (in common with other publishers) is not to do so, except in very limited circumstances. We are only able to correct typographical errors in the following:
author names, affiliations, articles titles, and abstracts and keywords. In such cases, an erratum or corrigendum would be necessary as well (see below), so that there is a record to explain the difference between the online and print versions. We can publish a correction to your article if there is a serious error, for example with regard to scientific accuracy, or if your reputation or that of the journal would be affected.
We do not publish corrections that do not affect the contribution in a material way or significantly impair the reader's understanding of the contribution (such as a spelling mistake or a grammatical