If any lookup name or column name contains a database reserved word, such as MONTH or YEAR, the mapping fails with database errors when the Integration Service executes SQL against the database.
You can create and maintain a reserved words file, reswords.txt, in the Integration Service installation directory. When the Integration Service initializes a mapping, it searches the reswords.txt file and places quotes around reserved words, and then executes the SQL against source, target, and lookup databases.
You might need to enable some databases, such as Microsoft SQL Server and Sybase, to use SQL-92 standards regarding quoted identifiers. Use environment SQL to issue the command. For example, with Microsoft SQL Server, use the following command: