/db/apps/megadigital/register/personen/detail.xqlexerr:ERROR XPTY0004: The actual cardinality for parameter 1 does not match the cardinality declared in the function's signature: concat($atomizable-values as xs:anyAtomicType?, ...) xs:string. Expected cardinality: zero or one, got 2. [at line 136, column 111, source: /db/apps/megadigital/register/personen/detail.xql]