Library Software FAQ> Auto-Cataloging, Web Search> Why I am not able to find some books

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Church Library Organizer Pro

Question/Topic: Why I am not able to find some books using Library Pro web search procedure?

ISBN number (International Standard Book Number)

  • 10-digit ISBN number: the number has 9 digits + 1 check digit; the last digit could be X;
    valid 10-digit ISBN numbers, examples:0316769487, 067973225X
  • 13-digit ISBN number: the number has 12 digits + 1 check digit;
    valid 13-digit ISBN numbers, examples: 9780385521680, 9780670020485

Invalid ISBN numbers:

  • 094884 : not a 10-digit or 13-digit number
    09488483983838338 : not a 10-digit or 13-digit number
    978-038552168 : invalid character "-" inside the number

Our program does not find the book because:

  • The ISBN number contains spaces or other invalid characters (example: "-", "=", "/", SPACE, TAB, ..). Valid entries are: 0,1,2,3,4,5,6,7,8,9,X
  • The ISBN number contains invalid number of digits. The correct ISBN number is a 10-digit number or 13-digit number.
  • The number is a 10-digit or 13-digit but is not a valid ISBN number.
  • The number is valid but the book is not listed on the selected web search site (example: old books, soft cover books are not listed in the Library Of Congress catalog...)
  • You have old version of the program with old search script files. You have to update search script files:
    how to update from the library software
    how to update manually

Use the following form to check if your ISBN number is correct:

Validate 10-digit ISBN number
Enter ISBN-10 (10-digit number)
Your 10-digit ISBN number is:

Validate 13-digit ISBN number
Enter ISBN-13 (13-digit number)
Your 13-digit ISBN number is:

Report problem:

  • You have a valid ISBN number
  • You can find a book manually (example: using, Library of Congress, or another book search engine
  • Our Library Pro is not able to find the book please let us know about this: click here

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