How to merge two customer accounts within the same customer

Summary:

How to merge two customer accounts within the same customer?

Content (please ensure you mask any confidential information):

We have created multiple customer accounts within the same Customer via FBDI in Fusion > Billing > Accounts Receivable. We want to merge these 2 customer accounts including their corresponding sites into 1 customer account only. See sample below:

Customer:

• Acct1: A1S1, A1S2, A1S3
• Acct2: A2S1

Result should be:

Customer:

• (Acct1 + Acct2): A1S1, A1S2, A1S3, A2S1

Please let us know how we can merge multiple customer accounts within the same customer

Version (include the version you are using, if applicable):