In the context of MiFID II this value is used as identified in RTS 23 Annex I Table 3 Field 23 Seniority of the bond.
Added EP235
[Junior]
MZ
=
Mezzanine
In the context of MiFID II this value is used as identified in RTS 23 Annex I Table 3 Field 23 Seniority of the bond.
Added EP235
[Mezzanine]
SN
=
Senior Non-Preferred
For CDS reference obligations of non-preferred senior debt issued by European Financials that constitute a layer of debt ranking between the bank's normal senior debt but above the bank's normal tier 2 subordinated debt (reference: ISDA Credit Market Infrastructure Group).