Field IDMB

It serves to find out the original personal identification in case the person received NID (alternative identification number) in case of duplicity. This identification is not unique. It contains:
- the birth number (9-digits birth number is padded on the right with a space) for Czech individuals,
- IC (organization identification number) padded on the left with zeroes to 10 characters for Czech legal entities,
- the birth date in format yyyymmdd padded on the right with 2 spaces for foreign individuals,
- the foreign identification number padded on the right with spaces to 10 characters (or blanks if it is not known) for foreign legal entities.