No subroutine CREATE_STATUS_HANDLER_XX found for country &1

What causes this issue?

Program has not found a subroutine which creates a status handler object
for this country version. In order to handle the information stored in
Documents and Subdocuments tables, a Status Handler object must be
created in a subroutine called CREATE_STATUS_HANDLER_XX where XX
corresponds to the country number (MOLGA). Depending on whether the
documents administration for the country version uses B2A or not, an
object of basis status handler class CL_HR99S00_B2A_DOCUMENT_ADMIN or a
reference to its subclass CL_HR99S00_B2A_DOC_ADMIN_NOB2A must be
created.

How to fix this error?

Create the subroutine CREATE_STATUS_HANDLER_XX in the corresponding
subroutine's include rpdhdl9s_country_forms_xx where XX states for the
country number MOLGA. If the country version uses B2A to administer the
Documents create the object simply by using the statement: CREATE
STATUS_HANDLER. On the contrary create the status handler refering to
the subclass as follows: CREATE STATUS_HANDLER TYPE
CL_HR99S00_B2A_DOC_ADMIN_NOB2A.

Error message extract from SAP system. Copyright SAP SE.