C1
If either field 32B or 33B is present, field 34B must also be present (Error code(s): C12).
C2
If field 34B is present, either field 32B or 33B must also be present (Error code(s): C12).
C3
If field 23 is present, field 52a must also be present (Error code(s): C16).
C4
Either field 39A or 39B, but not both, may be present (Error code(s): D05).
C5
Either field 44C or 44D, but not both, may be present (Error code(s): D06).
C6
At least one of the fields 31E, 32B, 33B, 34B, 39A, 39B, 39C, 44A, 
44E, 44F,
44B, 44C, 44D, 79 or 72 must be present (Error code(s): C30).
C7
The currency code in the amount fields 32B, 33B, and 34B must be the same (Error code(s): C02).
