## etc0015 - protection received etc0015 original protection value cannot change over time

### Card of business rule protection received etc0015 original protection value cannot change over time

Name | protection received etc0015 original protection value cannot change over time
Code | etc0015
Comment | This validation check ensures that the value reported for the 'original protection value' attribute is consistent between the current reporting reference date (T) and the previous available reporting reference date (T-1). This means that the value of the reported attribute cannot be changed. ECB Validation identifier: CN0812 The value cannot be changed, unless, none of the attached instruments in 'intrument-protection received data' was previously linked to this protection.
Rule Type | Constraint

### Server expression of the business rule protection received etc0015 original protection value cannot change over time

Let T be the reference date: (if ('instrument-protection received data'.'instrument identifier'(T) in 'instrument-protection received data'.'instrument identifier'(T-1) and ('instrument-protection received data'.'reporting agent identifier' = 'protection received'.'reporting agent identifier' and 'instrument-protection received data'.'protection identifier' = 'protection received'.'protection identifier' 'instrument-protection received data'.'reporting reference date' = 'protection received'.'reporting reference date')) then ('protection received'.'original protection value'(T) = 'protection received'.'original protection value'(T-1) and 'protection received'.'original protection value'(T) <> "Unknown"))

### List of DNB-specific attributes of the business rule protection received etc0015 original protection value cannot change over time

Name | Value
business rule classification | entity type constraint
business rule scope | Checked with data outside of the data delivery
business rule status | active business rule
number of dependencies | 1
severity | signalling

### List of attached objects of the business rule protection received etc0015 original protection value cannot change over time

Short Description
Entity Attribute 'protection received.original protection value'

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