What does the Apache FOP error mean?

Question

Error message

(The location of the error is unknown) org.apache.fop.fo.Validation Exception: The identifier of the property "_Ref191196753" of the former use; id values ​​must be unique in the document.

Any ideas on what can do this? Is it because I have for everyone and apply the same template several times?

Answer 1

The specification states that the identifier of an element must be unique.

The following code creates the error message you receive.

<fo:block id="_Ref191196753"/> <fo:block id="_Ref191196753"/> 

You need to find your fo file to find occurrences of elements with the same identifier. Then make changes to your XSLT to eliminate them.