In Production instance, cannot save copied Internal Book asset into Tax Book when method changed to

In Production instance, cannot save copied Internal Book asset into Tax Book when method changed to 'MACRS HY'.
'MACRS HY' and Life Years assigned are valid values.

Steps:

A. ADD NEW ASSET IN INTERNAL BOOK:

1. Navigation: Assets -> Asset Workbench -> Additions

2. Can successfully enter asset in 'Asset Details' screen.

3. Navigation: Continue -> Books-Internal

4. Can successfully enter in 'Books-Internal' screen cost, Depreciation Method:STL, Life Years:10, Prorate Convention:MID

MONTH, & Acquisition Date

5. Navigation: Continue -> Assignments

6. Can successfully enter in 'Assignments' screen, accounting string and location.

7. Asset successfully saved in the Internal book.

B. COPY NEW ASSET INTO TAX BOOK AND MODIFY: