Subject to the Financing Orders and Section 6.17 , promptly after any reasonable request by the Administrative Agent, or any Lender through the Administrative Agent, (a) correct any defect or error that may be discovered in any Loan Document or in the execution, acknowledgment, filing or recordation thereof, and (b) do, execute, acknowledge, deliver, record, re-record, file, re-file, register and re-register any and all such further acts, deeds, certificates, assurances and other instruments as the Administrative Agent, or any Lender through the Administrative Agent, may reasonably require from time to time in order to (i) carry out more effectively the purposes of the Loan Documents, (ii) to the fullest extent permitted by applicable Law, subject any Loan Party’s or any of its Subsidiaries’ (to the extent any such Subsidiary is required to become a Loan Party) properties, assets, rights or interests to the Liens now or hereafter intended to be covered by any of the Security Documents, (iii) perfect and maintain the validity, effectiveness and First Priority of any of the Security Documents and any of the Liens intended to be created thereunder and (iv) assure, convey, grant, assign, transfer, preserve, protect and confirm more effectively unto the Secured Parties the rights granted or now or hereafter intended to be granted to the Secured Parties under any Loan Document or under any other instrument executed in connection with any Loan Document to which any Loan Party or any of its Subsidiaries is or is to be a party, and cause each of its Subsidiaries to do so. Notwithstanding anything to the contrary in this Agreement or in the Security Documents, neither any Loan Party nor any Subsidiary shall have any obligation to (x) perfect Liens in any Foreign IP Rights to the extent the cost of obtaining such perfection exceeds the practical benefit to the Lenders afforded thereby (as reasonably determined by the Required Lenders), (y) grant any Lien on any Excluded Property or (z) cause any Excluded Subsidiary to become or continue as a Guarantor.