Internal error

What causes this issue?

Internal error when creating an instance.

System Response

The method CL_FSH_ASSIGNMENT~FACTORY cannot be called because of missing
parameters

How to fix this error?

Contact your system administrator

Procedure for System Administrators

The method can only be called with season year and season or season
year, season, and collection or season year, season, collection, and
theme.
The following parameters were delivered:
Season Year: &v1&
Season: &v2&
Collection: &v3&
Theme: &v4&

Error message extract from SAP system. Copyright SAP SE.