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How do I list out the keys of say the “record” attribute or all objects available to me in an Advanced PDF? For example, on a Vendor Payment template I know there are record.credit and record.apply objects, but I do not know all of the fields available within those objects. A simple “list” doesn’t work because it’s a string+hash

`For "#list" list source: Expected a sequence or collection, but this has evaluated to a hash+string (wrapper: com.netledger.templates.model.StringModel):`

have a read of <https://freemarker.apache.org/docs/ref_builtins_hash.html|Built-ins for hashes - Apache FreeMarker Manual>

you might be able to use hash listing with the syntax:
`&lt;#list record as key, value&gt;`
<https://freemarker.apache.org/docs/ref_directive_list.html#ref.directive.list:~:text=and%20to%20list%20the%20key%2Dvalue%20pairs%20of%20a%20hash%20(since%202.3.25)%3A|https://freemarker.apache.org/docs/ref_directive_list.html#ref.directive.list:~:text=and%20to%20list%2[…]pairs%20of%20a%20hash%20(since%202.3.25)%3A>

You probably already saw <https://blog.prolecto.com/2014/12/13/interrogating-netsuites-advanced-pdf-html-templates/|https://blog.prolecto.com/2014/12/13/interrogating-netsuites-advanced-pdf-html-templates/>

Yes! That is a very important article, on the way… but that only deals with top level data model keys. Thank you <@U29QCJQF3>. The problem we’re interested in solving is one layer down from there - in the `record` object.

And I cannot call `record?keys` because of the following error:
```For "?keys" left-hand operand: Expected an extended hash, but this has evaluated to a hash+string (wrapper: com.netledger.templates.model.StringModel):
==&gt; record [in template "template" at line 145, column 25]```

<@UHXHE0684> the errors I get are:

for `&lt;#list record as key, value&gt;`:
``` For "#list" list source: Expected an extended hash, but this has evaluated to a hash+string (wrapper: com.netledger.templates.model.StringModel):
==&gt; record [in template "template" at line 175, column 16]```

for `&lt;#list record as key&gt;`:
```For "#list" list source: Expected a sequence or collection, but this has evaluated to a hash+string (wrapper: com.netledger.templates.model.StringModel):
==&gt; record [in template "template" at line 175, column 16]```