Can we use Days instead of Calendar Days for UK Statutory Plans

Hi Team,

We are Implementing Absence for UK Client. In UK We have Statutory Requirements and Company Requirements. Oracle providing the statutory Solution for UK Legislation(How to create a plan, type and UOM, Planterm and Fast formula). In that Statutory Plans and types oracle is using the calendar days to create those.

But My client is asking to implement all the plans and types in UK in UOM as Days.

Is there any Impact if i use Days instead of Calendar days?

Is there any impact of Seeded Fast formulas?

Please provide your valuable inputs/Suggestions.

Thanks in advance.