[ESMA 70-872942901-38 MiFID II MiFIR market structures Q&A, Q&A 3.29]

No, it is not the intention of RTS 8 to prevent market makers that have live two-way quotes from adding further liquidity in the order book on a voluntary basis. Market Makers are therefore free to discretionarily post additional quotes on either side of order book in addition to the “simultaneous two-way quotes of comparable size and competitive price” imposed by Article 2(1)(b) of RTS 8. Only quotes that are posted to fulfil the obligations imposed by the market making agreement should be flagged as such in field 8 of Table 2 of the Annex of RTS 24 and field 3 of Table 3 of Annex II of RTS 6.