C1
If field 86 is present in any occurrence of the repetitive sequence, it must be preceded by a field 61. In addition, if field 86 is present, it must be present on the same page (message) of the statement as the related field 61 (Error code(s): C24).
C2
The first two characters of the three character currency code in fields 60a, 62a, 64 and 65 must be the same for all occurrences of these fields (Error code(s): C27).