A reason has to be entered for movement type &

What causes this issue?

IF &[SWITCH]S4H_DOCU_ON_PREMISE& = 'X'.
In Customizing for this <GL:movement_type>movement type</>, you have
defined that a reason has to be entered. But this has not been carried
out.
ENDIF.
IF &[SWITCH]S4H_DOCU_CLOUD& = 'X'.
For this <GL:movement_type>movement type</>, you have defined that a
reason has to be entered. But this has not been carried out.
ENDIF.

How to fix this error?

INCLUDE NA_SYSADMIN1
IF &[SWITCH]S4H_DOCU_ON_PREMISE& = 'X'.
In table T156 the field KZGRU is set to '+' for this movement type (the
field must be entered). You have to check whether reasons have been
entered for this movement type in tables T157D and T157E. You should
either enter a reason or switch off the mandatory entry for this
movement type.
ENDIF.

Error message extract from SAP system. Copyright SAP SE.