RES credits constraint respected but credits production don't match

[mdeviry]

I am implementing a RES policy called "efuel-credits" for the aviation sector. The policy constraint is correctly enforced on the consumption side: in inputs-by-tech, the aviation technologies consume exactly the number of credits required by the RES constraint.

However, the production of efuel-credits does not match the consumption at all. Even though a technology is defined to produce these credits via a res-secondary-output, the model does not scale production to meet the imposed demand.

Observed behavior:

• The RES constraint correctly forces aviation to consume efuel-credits.
• The production of these credits is near zero or far below the level of consumption.
• The res-secondary-output appears not to respond to the induced demand.
• The RES policy uses a global market, while the aviation input uses USA—but even when aligning markets, the production still does not scale appropriately.

What could cause a RES policy to correctly impose credit consumption while the corresponding production does not increase, despite having a technology with a res-secondary-output defined for the same credit? Is something missing in the market definition, the RES setup, or the way res-secondary-output is handled?

Below are the relevant XML snippets: the policy definition, the technology producing the credits, and the aviation technology that consumes them.
RES policy:

<policy-portfolio-standard name="efuel-credits">
    <market>global</market>
    <policyType>RES</policyType>
    <price-unit>1975$/GJ</price-unit>
    <output-unit>EJ</output-unit>
    <constraint year="2025">1</constraint>
    <constraint year="2030">1</constraint>
    <constraint year="2035">1</constraint>
    <constraint year="2040">1</constraint>
    <constraint year="2045">1</constraint>
    <constraint year="2050">1</constraint>
    <constraint year="2055">1</constraint>
    <constraint year="2060">1</constraint>
    <constraint year="2065">1</constraint>
    <constraint year="2070">1</constraint>
    <constraint year="2075">1</constraint>
    <constraint year="2080">1</constraint>
    <constraint year="2085">1</constraint>
    <constraint year="2090">1</constraint>
    <constraint year="2095">1</constraint>
    <constraint year="2100">1</constraint>
</policy-portfolio-standard>

Credit production (via res-secondary-output):

<location-info sector-name="refining" subsector-name="efuel">
  <technology name="industrial hydrogen">
    <period year="2025">
      <CO2 name="CO2" />
      <share-weight>1</share-weight>
      <minicam-energy-input name="elect_td_ind">
        <coefficient>0.4312862</coefficient>
      </minicam-energy-input>
      <minicam-energy-input name="H2 industrial">
        <coefficient>1.19</coefficient>
      </minicam-energy-input>
      <minicam-non-energy-input name="direct air capture">
        <input-cost>7.4685</input-cost>
      </minicam-non-energy-input>
      <res-secondary-output name="efuel-credits">
        <output-ratio>1</output-ratio>
      </res-secondary-output>
    </period>
  </technology>
</location-info>

Credit consumption in international aviation:

<supplysector name="trn_aviation_intl">
  <tranSubsector name="International Aviation">
    <stub-technology name="Liquids">
      <period year="2021">
        <minicam-energy-input name="efuel-credits">
          <coefficient>50000</coefficient>
          <market-name>USA</market-name>
        </minicam-energy-input>
      </period>
    </stub-technology>
  </tranSubsector>
</supplysector>

[fightingGCAM]

Have you solved this problem? I met a similar problem.