Hello! Please take a look on https://www.osmp.org/relation/16215233 (one of twenty relations). What is the mean of the foreign keys
CODIGO	152380100000010540034000000000
CODIGO_ANT	15238010010540034000
CODIGO_DEP	15
CODIGO_EDI	1
ETIQUETA	0
GLOBALID	183339dd-2add-44de-b6a7-9375b69bdf6a
IDENTIFICA	A
NUMERO_MEZ	0
NUMERO_PIS	2
NUMERO_SEM	0
NUMERO_SOT	0
OBJECTID	436162
Shape__Are	2.9501953125
Shape__Len	8.1228326984941503
TERRENO_CO	152380100000010540034000000000
TIPO_CONST	CONVENCIONAL
TIPO_DOMIN	PRIVADO
codigo_mun	15238 (first five character of ref:codcat, duplicate information)
?
By the way, a members relation are superfluous, since the information can also be written directly to the path.