To increase security for Merchants and shoppers alike, all new Second Life Marketplace Merchant accounts will be required to enter payment information on file (PIOF). If you would like to check your account to see if this requirement has been met, please see the Mesh Upload Status page.
Only newly created accounts will be required to meet this requirement at this time, and existing Merchant accounts will not be affected. However, we strongly recommend that all merchants complete the steps necessary to meet this new requirement.
If you have difficulties completing these steps, please file a support ticket or file a JIRA.
UPDATE - Nov. 13: Thanks to reports from Merchants, we have discovered a bug in the system that determines whether an account has payment info on file. We are working now to resolve this issue as quickly as possible and expect to release a fix in the next couple of weeks.
In addition, we have had some questions about the 5-day age requirement for accounts trying to become Merchant accounts. This requirement is not new, and there are no current plans to change it.