Document Sequencing for Payables Funding Invoices

Team, My client has a requirement to record gapless document sequencing for Payables invoices (including funding).  I defined Document Sequences, Document Sequence Categories, and Document Sequence Assignments, creating a custom document sequence category for OKL LEASE PAY INVOICES ES to configure sequencing for the funding invoices for Spain.  However, when I tried to create a funding request, I got an error message:

Document sequence for OKL Lease Pay Invoices has not been setup or setup incorrectly.

When I reverted to the generic ‘OKL Lease Pay Invoices’ document category and assigned this seeded category, the funding request is created successfully.

Is it possible to meet the requirement for gapless document sequencing by country for Payables funding invoices?