There may be multiple identity documents with different names. This particularly happens a lot when the name itself is not written in Latin script and has to be

There may be multiple identity documents with different names. This particularly happens a lot when the name itself is not written in Latin script and has to be romanized---one of my credit card had a different romanization (that I couldn't control) compared to what was written to my passport (that I had a control). Of course it is also possible that there is no canonical romanization available in any of those documents as well.