PUT Theme Product Template via Admin AP

I am trying to add a product suffix template to a theme programmatically using the admin API. We connect to the API using the X-Access-Shopify-Token and store URL, we get the active theme ID, then we get the product template, and then we want to post a copy of the product template as product.clearance.json. When I go to PUT the template back into the theme I get a 404 error. The product.clearance.json file is a replica of the product but is used only for clearance items that pass that template back to our web app where we process clearance product data.

I have been able to successfully GET both the theme and template, but when I try to PUT them back, nothing happens.

This is the URL path (I think is correct)

https://{{storeUrl-iwt}}/admin/api/2024-07/themes/{{themeid}}/assets.json

and the JSON file I am trying to PUT into the theme.

{
  "asset": {
    "key": "templates/product.clearance.json",  // Path and file name of the new template
    "value": "{\n  \"sections\": {\n    \"main\": {\n      \"type\": \"main-product\",\n      \"blocks\": {\n        \"vendor\": {\n          \"type\": \"text\",\n          \"settings\": {\n            \"text\": \"{{ product.vendor }}\",\n            \"text_style\": \"uppercase\"\n          }\n        },\n        \"title\": {\n          \"type\": \"title\",\n          \"settings\": {\n          }\n        },\n        \"price\": {\n          \"type\": \"price\",\n          \"settings\": {\n          }\n        },\n        \"variant_picker\": {\n          \"type\": \"variant_picker\",\n          \"settings\": {\n            \"picker_type\": \"button\",\n            \"swatch_shape\": \"circle\"\n          }\n        },\n        \"quantity_selector\": {\n          \"type\": \"quantity_selector\",\n          \"settings\": {\n          }\n        },\n        \"development_iwt_modal_button\": {\n          \"type\": \"shopify:\\/\\/apps\\/development\\/blocks\\/iwt-modal-button\\/8530d116-d113-4019-a57e-7c7f122435f9\",\n          \"settings\": {\n          }\n        },\n        \"buy_buttons\": {\n          \"type\": \"buy_buttons\",\n          \"settings\": {\n            \"show_dynamic_checkout\": true,\n            \"show_gift_card_recipient\": true\n          }\n        },\n        \"description\": {\n          \"type\": \"description\",\n          \"settings\": {\n          }\n        },\n        \"share\": {\n          \"type\": \"share\",\n          \"settings\": {\n            \"share_label\": \"Share\"\n          }\n        }\n      },\n      \"block_order\": [\n        \"vendor\",\n        \"title\",\n        \"price\",\n        \"variant_picker\",\n        \"quantity_selector\",\n        \"development_iwt_modal_button\",\n        \"buy_buttons\",\n        \"description\",\n        \"share\"\n      ],\n      \"settings\": {\n        \"enable_sticky_info\": true,\n        \"color_scheme\": \"scheme-1\",\n        \"media_size\": \"large\",\n        \"constrain_to_viewport\": true,\n        \"media_fit\": \"contain\",\n        \"gallery_layout\": \"stacked\",\n        \"media_position\": \"left\",\n        \"image_zoom\": \"lightbox\",\n        \"mobile_thumbnails\": \"hide\",\n        \"hide_variants\": true,\n        \"enable_video_looping\": false,\n        \"padding_top\": 36,\n        \"padding_bottom\": 12\n      }\n    },\n    \"related-products\": {\n      \"type\": \"related-products\",\n      \"settings\": {\n        \"heading\": \"You may also like\",\n        \"heading_size\": \"h2\",\n        \"products_to_show\": 4,\n        \"columns_desktop\": 4,\n        \"color_scheme\": \"scheme-1\",\n        \"image_ratio\": \"square\",\n        \"image_shape\": \"default\",\n        \"show_secondary_image\": true,\n        \"show_vendor\": false,\n        \"show_rating\": false,\n        \"columns_mobile\": \"2\",\n        \"padding_top\": 36,\n        \"padding_bottom\": 28\n      }\n    }\n  },\n  \"order\": [\n    \"main\",\n    \"related-products\"\n  ]\n}"
    
  }
}

Not sure why a 404 error is what I am getting.