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Customizing 
This process describes how you customize the SAP System for use in conjunction with the chain liability functions.
You need to perform the following Customizing steps, in accordance with your requirements, before you carry out any other activity related to chain liability:
· Maintaining Sub-Contractor’s Certificates if you are posting to a blocked account
· Defining Payment Block Reasons if you are posting to a blocked account
· Defining Chain Liability Methods and Assigning Chain Liability Methods to Company Codes if you are posting to a blocked account
· Customizing for Extended Withholding Tax if you are posting directly to the authorities
· Enabling Amount Split for all postings
