This is a storage format for the demo shown onĀ Common table with auto numbers used by multiple forms

<ac:structured-macro ac:macro-id="f76e765d-1bb9-4b09-97a4-37fa76a2b01d" ac:name="confiform" ac:schema-version="1">
  <ac:parameter ac:name="formName">autonumbersForm</ac:parameter>
  <ac:rich-text-body>
    <p>
      <ac:structured-macro ac:macro-id="e30298cd-66d9-4577-812a-805f418d4a63" ac:name="confiform-field-definition" ac:schema-version="1">
        <ac:parameter ac:name="fieldName">key</ac:parameter>
        <ac:parameter ac:name="fieldLabel">key</ac:parameter>
        <ac:parameter ac:name="values">CF-:</ac:parameter>
        <ac:parameter ac:name="type">auto</ac:parameter>
      </ac:structured-macro>
    </p>
  </ac:rich-text-body>
</ac:structured-macro>
<p>Keys</p>
<ac:structured-macro ac:macro-id="a04e2b6e-c844-47cf-9d96-838a3a435c58" ac:name="confiform-table" ac:schema-version="1">
  <ac:parameter ac:name="formName">autonumbersForm</ac:parameter>
  <ac:rich-text-body>
    <p>
      <ac:structured-macro ac:macro-id="948e340b-df5e-4f7c-a9f1-f081d4e96c69" ac:name="confiform-field" ac:schema-version="1">
        <ac:parameter ac:name="fieldName">key</ac:parameter>
      </ac:structured-macro>
    </p>
  </ac:rich-text-body>
</ac:structured-macro>
<p>
  <br/>
</p>
<p>
  <br/>
</p>
<ac:structured-macro ac:macro-id="67d072fe-6fa1-45e0-83c4-b3cb76019182" ac:name="confiform" ac:schema-version="1">
  <ac:parameter ac:name="formName">f1</ac:parameter>
  <ac:rich-text-body>
    <ac:structured-macro ac:macro-id="3e2e542e-ed74-4f76-a73d-0805b562e186" ac:name="confiform-entry-register" ac:schema-version="1">
      <ac:rich-text-body>
        <p>
          <br/>
        </p>
      </ac:rich-text-body>
    </ac:structured-macro>
    <p>
      <ac:structured-macro ac:macro-id="0bf51a5b-c234-4539-907a-50800d12912f" ac:name="confiform-field-definition" ac:schema-version="1">
        <ac:parameter ac:name="fieldName">nr</ac:parameter>
        <ac:parameter ac:name="fieldLabel">nr</ac:parameter>
        <ac:parameter ac:name="values">[19103950|autonumbersForm|key|true||[entry.key]]</ac:parameter>
        <ac:parameter ac:name="type">smartselect</ac:parameter>
      </ac:structured-macro>
    </p>
    <p>
      <ac:structured-macro ac:macro-id="f2e74cb3-20aa-4395-bdda-035856a2520d" ac:name="confiform-field-definition" ac:schema-version="1">
        <ac:parameter ac:name="fieldName">t</ac:parameter>
        <ac:parameter ac:name="fieldLabel">t</ac:parameter>
        <ac:parameter ac:name="type">text</ac:parameter>
      </ac:structured-macro>
    </p>
    <p>
      <ac:structured-macro ac:macro-id="28dee88c-fbe1-4afe-8438-fe0c7ae1a12a" ac:name="confiform-field-definition-rules" ac:schema-version="1">
        <ac:parameter ac:name="condition">*</ac:parameter>
        <ac:parameter ac:name="fieldName">nr</ac:parameter>
        <ac:parameter ac:name="action">Hide field</ac:parameter>
      </ac:structured-macro>
    </p>
    <ac:structured-macro ac:macro-id="7bf2d828-cffe-4665-b9f9-374af0f3000a" ac:name="confiform-ifttt" ac:schema-version="1">
      <ac:parameter ac:name="action">Create ConfiForms Entry</ac:parameter>
      <ac:parameter ac:name="event">onCreated</ac:parameter>
      <ac:parameter ac:name="resultName">auformresult</ac:parameter>
      <ac:parameter ac:name="who">autonumbersForm:this</ac:parameter>
      <ac:rich-text-body>
        <p>
          <br/>
        </p>
      </ac:rich-text-body>
    </ac:structured-macro>
    <ac:structured-macro ac:macro-id="abfe2310-7043-4e78-b113-913a5ccbb825" ac:name="confiform-ifttt" ac:schema-version="1">
      <ac:parameter ac:name="action">Create ConfiForms Entry</ac:parameter>
      <ac:parameter ac:name="event">onCreated</ac:parameter>
      <ac:parameter ac:name="title">entryId=[entry.id]&amp;nr=${iftttResult_auformresult.id}</ac:parameter>
      <ac:parameter ac:name="resultName">auformresult</ac:parameter>
      <ac:rich-text-body>
        <p>
          <br/>
        </p>
      </ac:rich-text-body>
    </ac:structured-macro>
  </ac:rich-text-body>
</ac:structured-macro>
<ac:structured-macro ac:macro-id="0dc0e85d-af0c-4287-8a03-8f88d45115fe" ac:name="confiform" ac:schema-version="1">
  <ac:parameter ac:name="formName">f2</ac:parameter>
  <ac:rich-text-body>
    <ac:structured-macro ac:macro-id="504698e2-7212-44a2-9251-b3dbd1be73c8" ac:name="confiform-entry-register" ac:schema-version="1">
      <ac:rich-text-body>
        <p>
          <br/>
        </p>
      </ac:rich-text-body>
    </ac:structured-macro>
    <p>
      <ac:structured-macro ac:macro-id="9812c0a3-a33b-4750-8556-b3cfa8d44f1c" ac:name="confiform-field-definition" ac:schema-version="1">
        <ac:parameter ac:name="fieldName">nr</ac:parameter>
        <ac:parameter ac:name="fieldLabel">nr</ac:parameter>
        <ac:parameter ac:name="values">[19103950|autonumbersForm|key|true||[entry.key]]</ac:parameter>
        <ac:parameter ac:name="type">smartselect</ac:parameter>
      </ac:structured-macro>
    </p>
    <p>
      <ac:structured-macro ac:macro-id="59dd4de2-1722-4728-b16b-7ffc566ab1b7" ac:name="confiform-field-definition" ac:schema-version="1">
        <ac:parameter ac:name="fieldName">t</ac:parameter>
        <ac:parameter ac:name="fieldLabel">t</ac:parameter>
        <ac:parameter ac:name="type">text</ac:parameter>
      </ac:structured-macro>
    </p>
    <p>
      <ac:structured-macro ac:macro-id="e3395497-24a0-4d46-af90-f19d255b7de6" ac:name="confiform-field-definition-rules" ac:schema-version="1">
        <ac:parameter ac:name="condition">*</ac:parameter>
        <ac:parameter ac:name="fieldName">nr</ac:parameter>
        <ac:parameter ac:name="action">Hide field</ac:parameter>
      </ac:structured-macro>
    </p>
    <ac:structured-macro ac:macro-id="1a73f23f-b9fc-4df8-9b6a-5e79ba418df8" ac:name="confiform-ifttt" ac:schema-version="1">
      <ac:parameter ac:name="action">Create ConfiForms Entry</ac:parameter>
      <ac:parameter ac:name="event">onCreated</ac:parameter>
      <ac:parameter ac:name="resultName">auformresult</ac:parameter>
      <ac:parameter ac:name="who">autonumbersForm:this</ac:parameter>
      <ac:rich-text-body>
        <p>
          <br/>
        </p>
      </ac:rich-text-body>
    </ac:structured-macro>
    <ac:structured-macro ac:macro-id="b1d6726b-e61a-4260-8db0-deeaf6234947" ac:name="confiform-ifttt" ac:schema-version="1">
      <ac:parameter ac:name="action">Create ConfiForms Entry</ac:parameter>
      <ac:parameter ac:name="event">onCreated</ac:parameter>
      <ac:parameter ac:name="title">entryId=[entry.id]&amp;nr=${iftttResult_auformresult.id}</ac:parameter>
      <ac:parameter ac:name="resultName">auformresult</ac:parameter>
      <ac:rich-text-body>
        <p>
          <br/>
        </p>
      </ac:rich-text-body>
    </ac:structured-macro>
  </ac:rich-text-body>
</ac:structured-macro>
<p>Form f1 data</p>
<ac:structured-macro ac:macro-id="c785829f-545d-4e80-9706-93603b217bcf" ac:name="confiform-table" ac:schema-version="1">
  <ac:parameter ac:name="formName">f1</ac:parameter>
  <ac:rich-text-body>
    <p>
      <ac:structured-macro ac:macro-id="0f20be4f-bfd5-495d-aef5-323d9956d256" ac:name="confiform-field" ac:schema-version="1">
        <ac:parameter ac:name="fieldName">nr</ac:parameter>
      </ac:structured-macro>
    </p>
    <p>
      <ac:structured-macro ac:macro-id="2283cf26-d410-4ce3-b5d2-b3a91b891014" ac:name="confiform-field" ac:schema-version="1">
        <ac:parameter ac:name="fieldName">t</ac:parameter>
      </ac:structured-macro>
    </p>
  </ac:rich-text-body>
</ac:structured-macro>
<p>Form f2 data</p>
<ac:structured-macro ac:macro-id="480fd5b1-03b4-4eb7-a391-ed5e12d7e390" ac:name="confiform-table" ac:schema-version="1">
  <ac:parameter ac:name="formName">f2</ac:parameter>
  <ac:rich-text-body>
    <p>
      <ac:structured-macro ac:macro-id="a896ab0c-66aa-419a-a547-299465b79d06" ac:name="confiform-field" ac:schema-version="1">
        <ac:parameter ac:name="fieldName">nr</ac:parameter>
      </ac:structured-macro>
    </p>
    <p>
      <ac:structured-macro ac:macro-id="507373d1-41a5-416c-96c5-76d425e8742b" ac:name="confiform-field" ac:schema-version="1">
        <ac:parameter ac:name="fieldName">t</ac:parameter>
      </ac:structured-macro>
    </p>
  </ac:rich-text-body>
</ac:structured-macro>