|<code>FOTY0012</code>
| An item has no typed value.
|<code>count#1</code>
|- valign="top" scope="row"
|<code>FOTY0013</code>
| Functions items cannot be atomized, have no defined equality, and have no string representation.
|<code>data(false#0)</code>
|- valign="top" scope="row"
|<code>FOTY0014</code>
| Function items have no string representation.
|<code>string(map {})</code>
|- valign="top" scope="row"
|<code>FOTY0015</code>
| Function items cannot be compared.
|<code>deep-equal(false#0, true#0)</code>
|-
| colspan=3 style="background-color:white;"|
|<code>unparsed-text('file.txt', 'InvalidEncoding')</code>
|}
....to be added: FOTY0012-0015
==Serialization Errors==