form vaildation

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i have form both required , optional fields. 2 of required fields name of record , it's level of revision. one-to-one relationship. however, user wants level of revision free-entry field , not automatic increment next level. initial level *, should move a, b, c, etc. said, supposed free-entry field. obviously, cannot allow level exists established record number entered more once, thereby creating 2 of same records. there way coldfusion can produce error msg if attempts enter existing level created record number, or should handled via sql???

cold fusion creates big ugly gray error messages if don't userproof application. prefer write own code.


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