Find below a description of restrictions on the sequence of Timestamp type attributes. Time consistency rules apply for combined contracts for each level separately.

Rule 1:

CDD <= IED <= XX <= OPXED <= MD <= AMD <= STD

where XX are  IPCED, PRD, TD, plus all anchor dates (e.g. RRANX) except IPANX

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Rule 2:

IPANX<MD<=AMD

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Rule 3:

CDD <= SD <= XX

where XX are any of MD, STD, OPXED and TD

Rule 4:

If DVNP defined and DVCL not defined, then DVANX > SD (because DVANX defines the date of payment of DVNP).