any illegality or lack of validity or enforceability of any Obligation or any Credit Document or any related agreement or instrument;

any illegality or lack of validity or enforceability of any Secured Obligation or any Credit Document or any related agreement or instrument;

any lack of validity or enforceability of such Letter of Credit or any term or provision thereof, any Loan Document, or any other agreement or instrument relating thereto;

any lack of validity or enforceability of this Agreement or any Letter of Credit or any document related hereto or thereto;

any lack of validity or enforceability of such Letter of Credit, this Agreement, or any other Loan Document or any other agreement or instrument relating thereto;

any lack of validity, enforceability or legal effect of any Letter of Credit, any Issuer Document, this Agreement, or any Loan Document, or any term or provision therein or herein;

any lack of validity or enforceability of this Agreement, any other Loan Document or any Letter of Credit, or any term or provision herein or therein;

any lack of validity or enforceability of the Credit Agreement or any other Loan Document;

any lack of validity or enforceability of such Letter of Credit, this Agreement or any other Credit Document;