SAP Message 0D319 - Unexpected ELSE case: field &1 with value &2 (&3 &4)

Diagnosis
An unexpected or unpermitted case occurred in a CASE or IF construct.The cause was field &V1& with value &V2&.

Procedure
Note the field name and value that caused the error.
INCLUDE FICA_NA_OSS_1 OBJECT DOKU ID TX LANGUAGE EN