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Asked: 2026-05-27T04:28:13+00:00

I have recently started with XML and had a question regarding XML schemas. As

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I have recently started with XML and had a question regarding XML schemas. As I understand schemas define a sort of contract that all XML files that implement the schema, will follow.

Take, for example, this schema: http://estar8.energystar.gov/ESES/ABS20/Schemas/ManageMetersResponse.xsd

The root contains three children: txnsID, espUserID and customer. I’ve read up on schemas and I think I am OK, but I am looking after someone’s code and the code calls 

root.getAllChildrenByNameOf("customer")

instead of 

root.getChildByNameOf("customer")

which makes me think that there might be multiple customer elements, while I think the schema defines that only one may exist per document. Any clarifications? Thanks for your time.

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1 Answer

  1. Editorial Team

    The schema you linked to allows any number of “customer” elements. The relevant portion is this attribute:

    maxOccurs="unbounded"

    This means the element can repeat any number of times.

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