<div style="display: flex; flex-wrap: wrap; white-space: pre-wrap; align-items: center; "><img height="20" width="20" style="border-radius:50%; margin-right: 4px;" decoding="async" src="https://avatars.githubusercontent.com/u/16009897?s=20&v=4" /><strong>k-yle</strong> left a comment <a href="https://github.com/openstreetmap/openstreetmap-website/pull/5973#issuecomment-2890519162">(openstreetmap/openstreetmap-website#5973)</a></div>
<p dir="auto">If we decide to get rid of the <code class="notranslate">create</code>/<code class="notranslate">update</code>/<code class="notranslate">delete</code> blocks, then there are two options (broadly speaking):</p>
<ol dir="auto">
<li>allow attributes to be specified some some elements only. Requires a nested array:</li>
</ol>
<div class="highlight highlight-source-json-comments" dir="auto"><pre class="notranslate">{
  <span class="pl-s">"osmChange"</span>: [
    { <span class="pl-s">"elements"</span>: [<span class="pl-ii">a</span>, <span class="pl-ii">b</span>, <span class="pl-ii">c</span>, <span class="pl-ii">d</span>] },
    { <span class="pl-s">"elements"</span>: [<span class="pl-ii">e</span>, <span class="pl-ii">f</span>], <span class="pl-s">"ifUnused"</span>: <span class="pl-c1">true</span> },
  ],
  <span class="pl-c"><span class="pl-c">//</span> extra properties for 'options' or 'changesetTags' or whatever could go here</span>
}</pre></div>
<ol start="2" dir="auto">
<li>require all attributes to specified per-changeset:</li>
</ol>
<div class="highlight highlight-source-json-comments" dir="auto"><pre class="notranslate">{
  <span class="pl-s">"osmChange"</span>: [<span class="pl-ii">a</span>, <span class="pl-ii">b</span>, <span class="pl-ii">c</span>, <span class="pl-ii">d</span>, <span class="pl-ii">e</span>, <span class="pl-ii">f</span>],
  <span class="pl-s">"ifUnused"</span>: <span class="pl-c1">true</span>,
  <span class="pl-c"><span class="pl-c">//</span> extra properties for 'options' or 'changesetTags' or whatever could go here</span>
}</pre></div>
<hr>
<p dir="auto">I know that iD specifies <code class="notranslate">if-unused</code> for <em>all</em> elements, and I'm struggling to think of a use-case where you would want <code class="notranslate">if-unused</code> to only apply to some items</p>

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