It is unlikely and probably impossible to create a CR2 digital image from a .tga source. Digital RAW photographs are recorded by digital cameras and cannot be created in software only. TGA is also not a raw format, but already compressed so unsuitable for this task anyway.
This conversion entry was verified by us and conversion was flagged as wrong or not possible.
Usually this happens when the conversion would try to convert different types of data between each other, such as audio to image, or it is not possible because incompatibility between programs, caused by closed file formats, very limited support etc.
If you find entry that you feel is flagged as bad wrongly, please tell us in the discussion below with as much as information as possible so we can fix it.