How large a LAR are you talking about? I have 9,000 LAR lines with data coming from three different departments. Each department has their own procedures that include HMDA steps. I have my own procedures for combining and scrubbing. How large (or small) is your LAR? Do you do the input or is it done in various departments? Perhaps if you provide this information some of us will be able to help out. However, procedures are usually pretty much tailored to the individual bank.
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My comments and opinions are my own, not my employer's.