A string of characters you can define yourself to have the funds center found "filled out" in the event of a successful search if it is too short.
The prefix should be the same length as the document numbers being searched for in the system. The later part is then replaced with the search string found.
If a "hit" is longer than, or as long as, the relevant prefix, the hit overwrites the whole prefix.
This function is particularly useful for filling in redundant parts (such as leading zeros) when the reference information is incomplete.
Prefix "1800000000" and hit "12345" results in number "1800012345".