Unable to click on element though Web driver is able to find it.
Already implicit wait applied. Also,tried explicit wait but when explicit wait getting error element is not attached to page
WebElement sales_order_doc_type_dropdown = driver.findElement(By.xpath("//input[@id='WD67']"));
sales_order_doc_type_dropdown.click();
HTML Code for element
<input id="WD67" ct="CB" lsdata="{1:'26.4ex',5:true,8:'WD68',9:'1'}" lsevents="{Select:[{ResponseData:'delta',ClientAction:'submit'},{}]}" type="text" autocomplete="off" tabindex="0" ti="0" class="urEdf2TxtEnbl lsEdfLeftBrdRadius lsEdf3TxtHlpBtn urBorderBox lsControl--explicitwidth" readonly="" value="" style="vertical-align:top;width:26.4ex;">