Greetings, We are in the process of starting a small library for our small college. I have an Excel file with 5 columns. The first column is our own internal proprietary number we were using just to have a simple unique identifier, and, it wouldn't probably be a big deal if it were totally absent from the MARC record. The second column is the Library of Congress number associated with the book. The third column is the publication date. The fourth column is the author. The fifth column is the title. I am entirely ignorant when it comes to the MARC record format. Terry Reese was kind enough to provide me with the following information when I was stumped as to how MarcEdit could complete this conversion for me: Field 0: 035$a = proprietary book number Field 1: 090$a = LC classification number Field 2: 260$c = Publication date Field 3: 100$a; indicators: 10 = Author Field 4: 245$a; indicators: 10 = Title Using that information (as best as I can figure out how), and then putting the MARC file through MarcEdit's validator, I receive the following errors: Record #: 18 001 (if defined): 245 (if defined): = Title$aOur High Calling Errors: 100-ind1: Invalid data (\) Indicator can only be 013. 245-ind1: Invalid data (\) Indicator can only be 01. 245-ind2: Invalid data (\) Indicator can only be 0-9. I am rather stumped. I have found several sites that elaborate on MARC file indicators, but I cannot figure out for the life of me what I need to do. The errors seem to indicate above that the 'indicator' 10 is not valid for the 'fields' of 100 or 245- but perhaps I am not reading that correctly? Any help would be very appreciated, Joshua