Message Oracle LPX-00101 - parameter-entity markup cannot be split up

ERROR	parameter-entity markup cannot be split up
CAUSE	Validity Constraint 2.8 failed: Parameter-entity replacement text must be properly nested with markup declarations. Example: %e; greeting (#PCDATA)> ]> Hello! Explanation: The parameter entity e contains markup which may not be split up; the entire ELEMENT (or ATTLIST or ENTITY) definition must be present in one piece.
ACTION	Correct the document.