Русско-англо-русский юридический словарь

The withdrawal of an ambassador does not break diplomatic relations -- the rest of the ambassador's embassy remains in place and continues working. (Quora)

The withdrawal of an ambassador, or a diplomatic mission, is one of the strongest signals a country can give of its displeasure. (politics.co.uk)

There are other ways, however, of showing diplomatic anger. One of the most common is the withdrawal of an ambassador ‘for consultations.’ This is a signal that stops short of a formal break in diplomatic relations but makes clear that a government finds the behaviour of another government unacceptable. (Diplomat Magazine)