ID de contrato no recibido.
<div class="row">
    <div class="col-md-6">
        <div class="row">
            <div class="col-md-12 mb-3">
                <label for="nombre"><small><b>Nombre</b></small></label>
                <input type="text" id="nombre" name="nombre" class="form-control" value="<br />
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" readonly>
            </div>
            <div class="col-md-12 mb-3">
                <label for="id_firma" class="form-label"><small><b>Firma (Seleccione):<span style="color:red">*</span></b></small></label>
                <select id="id_firma" name="id_firma" class="form-control">
                                            <option value="1">ALIADO CONTABLE</option>
                                            <option value="2">EXPERTICIA CONTABLE</option>
                                            <option value="3">DEEMSA</option>
                                    </select>
            </div> 
            <div class="col-md-12 mt-2">
                <label for="no_contrato" class="form-label"><small><b>No. Contrato:<span style="color:red">*</span></b></small></label>
                <input type="text" id="no_contrato" name="no_contrato" class="form-control" value="<br />
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">
            </div>

            <div class="col-md-6 mt-2">
                <label for="valor_sin_iva" class="form-label"><small><b>Total del Contrato Sin IVA:<span style="color:red">*</span></b></small></label>
                <input type="number" id="valor_sin_iva" name="valor_sin_iva" class="form-control" value="<br />
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" step="0.01">
            </div>

            <div class="col-md-6 mt-2">
                <label for="anio_contrato" class="form-label"><small><b>Año Contrato:<span style="color:red">*</span></b></small></label>
                <input type="number" id="anio_contrato" name="anio_contrato" class="form-control" value="<br />
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<br />
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">
            </div>

            <div class="col-md-6 mb-3">
                <label for="st_tipo_contrato" class="form-label"><small><b>Tipo Contrato (Seleccione):<span style="color:red">*</span></b></small></label>
                <select id="st_tipo_contrato" name="st_tipo_contrato" class="form-control">
                                            <option value="1">CONTRATO CON ANTICIPO</option>
                                            <option value="2">CONTRATO SIN ANTICIPO</option>
                                            <option value="3">CONTRATO CON ABONOS</option>
                                            <option value="4">CONTRATO PREPAGADO</option>
                                    </select>
            </div> 

            <div class="col-md-6 mt-2">
                <label for="porcentaje_anticipo" class="form-label"><small><b>Porcentaje Anticipo Contrato:<span style="color:red">*</span></b></small></label>
                <input type="number" id="porcentaje_anticipo" name="porcentaje_anticipo" class="form-control" value="<br />
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">
            </div>

            <div class="col-md-12 mb-3">
                <label for="st_contrato_cargado" class="form-label"><small><b>Contrato Cargado (Seleccione):<span style="color:red">*</span></b></small></label>
                <select id="st_contrato_cargado" name="st_contrato_cargado" class="form-control">
                    <option value="S">SI</option>
                    <option value="N">NO</option>
                </select>
            </div>

            <div class="col-md-12 mb-3">
                <label for="st_contrato" class="form-label"><small><b>Estado Contrato (Seleccione):<span style="color:red">*</span></b></small></label>
                <select id="st_contrato" name="st_contrato" class="form-control">
                                            <option value="1">CONTRATADO</option>
                                            <option value="2">PENDIENTE</option>
                                            <option value="3">INGRESADO</option>
                                            <option value="4">FINALIZADO</option>
                                            <option value="5">ELIMINADO</option>
                                    </select>
            </div> 

            <div class="col-md-12 mb-3">
                <label for="id_comercial" class="form-label"><small><b>Ejecutivo Comercial (Seleccione):<span style="color:red">*</span></b></small></label>
                <select id="id_comercial" name="id_comercial" class="form-control">
                                            <option value="28">JOSUÉ ZURITA</option>
                                            <option value="29">ANDREA ASPIAZU</option>
                                            <option value="17">CARLOS ORTIZ</option>
                                            <option value="19">ERICK GAVILANES</option>
                                            <option value="16">WENDY ALAVA</option>
                                            <option value="18">FERNANDO QUITO</option>
                                    </select>
            </div> 
            <div class="col-md-12 mb-3">
                <label for="id_calidad" class="form-label"><small><b>Ejecutivo Calidad (Seleccione):<span style="color:red">*</span></b></small></label>
                <select id="id_calidad" name="id_calidad" class="form-control">
                                            <option value="24">EMILIO PAREDES</option>
                                            <option value="5">JAVIER RAMIREZ</option>
                                            <option value="23">ALEJANDRO ROMERO</option>
                                            <option value="2">ALEXANDRA MORALES</option>
                                            <option value="4">ISMAEL CUENCA</option>
                                            <option value="8">KEVIN FLORES</option>
                                            <option value="7">JOSSELIN GUACHAMIN</option>
                                            <option value="22">JONATHAN GARCIA</option>
                                            <option value="26">THOMAS ALQUINGA</option>
                                            <option value="3">ALEXANDRA TACURI</option>
                                            <option value="10">ROLANDO MOROCHO</option>
                                            <option value="25">LEONARDO PLASENCIA</option>
                                            <option value="30">EDDY FLORES</option>
                                            <option value="9">PEDRO PAUTE</option>
                                            <option value="12">ROGGER REYES</option>
                                            <option value="13">LUIS TRUJILLO</option>
                                            <option value="14">PAUL TORRES</option>
                                            <option value="15">VICTORIA MARCHAN</option>
                                            <option value="6">JESSICA CALDERON</option>
                                            <option value="31">MIGUEL GOMEZ </option>
                                            <option value="20">BLANCA QUISHPE</option>
                                    </select>
            </div> 

            <div class="col-md-12 mb-3">
                <label for="observacion" class="form-label"><small><b>Comentarios:</b></small></label>
                <input type="text" id="observacion" name="observacion" class="form-control" value="">
            </div>

        </div>
        
    </div>
</div>