invoice.edn

{:invoice/id    "i1"
 :invoice/items [{:invoice-item/id          "ii1"
                  :invoice-item/sku         "SKU 1"
                  :taxable/taxes            [{:tax/id       "t1"
                                              :tax/category :iva
                                              :tax/rate     19}]
                  :retentionable/retentions [{:retention/id       "r1"
                                              :retention/category :ret_fuente
                                              :retention/rate     1}]}
                 {:invoice-item/id  "ii2"
                  :invoice-item/sku "SKU 2"
                  :taxable/taxes    [{:tax/id       "t2"
                                      :tax/category :iva
                                      :tax/rate     16}]}
                 {:invoice-item/id  "ii3"
                  :invoice-item/sku "SKU 3"
                  :taxable/taxes    [{:tax/id       "t3"
                                      :tax/category :iva
                                      :tax/rate     19}]}
                 {:invoice-item/id          "ii4"
                  :invoice-item/sku         "SKU 3"
                  :retentionable/retentions [{:retention/id       "r2"
                                              :retention/category :ret_fuente
                                              :retention/rate     1}]}
                 {:invoice-item/id          "ii5"
                  :invoice-item/sku         "SKU 4"
                  :retentionable/retentions [{:retention/id       "r3"
                                              :retention/category :ret_fuente
                                              :retention/rate     2}]}]}