Upvote:4
Presently, the passport stamps are used for the calculation of the duration of the authorised stay of third country nationals. (The 90 days in any 180-day period rule)
Article 11 of the Schengen Border Code does not list residence permit card holders as being exempted from the passport stamp requirement.
Since the 90 day rule does not apply while in the country of residence, the passport stamps served no practical purpose as proof that the 3rd country national has overstayed while outside of their country of residence.
Since changes to the Schengen Border Code were planned for the introduction of the Entry/Exit System (EES), that would take this into account, no changes were made to the Border Code in 2017.
Some countries simply stopped stamping the passports of residence permit card holders in expectation of this change.
When the Entry/Exit System (EES) is introduced (now expected in 2024), the entry and exit recording will be done electronically and the passport stamps abolished.
Article 2 (3) of REGULATION (EU) 2017/2226 (Entry/Exit System (EES)) contains a list of persons who will be exempt from the recording of their entry and exit.
Among these are residence permit card holders and persons with a long-stay visas.