Error: Invalid format.
Form value: {{ validatedMaskForm.value | json }}
Testform: {{ validatedMaskForm.status | json }}
Validation errors: {{ validatedMaskForm.get('maskInput')?.errors | json }}

Try to enter some test IBANs:

Germany: DE89 3704 0044 0532 0130 00
Norway: NO93 8601 1117 947
Malta: MT84 MALT 0110 0001 2345 MTLC AST0 01S