In order to use the append slide endpoint, you'll need to structure your slide payload in a certain way. Below is an example of that structure.
{
"slide": {
"id": null,
"base_text": "Weighted Base (All Answering):ALL",
"table_text": "Q1",
"index": 0,
"layout": {
"pptx_template": "Default",
"slide_layout_index": 5,
"slide_master_index": 0
},
"question_text": "Q1. Which of these have you done in the last week?"
},
"charts": [{
"rows": [{
"text": "Read a printed newspaper",
"visible": true
}, {
"text": "Visited a newspaper website",
"visible": true
}, {
"text": "Read a printed magazine",
"visible": true
}],
"columns": [{
"text": "Total",
"selected": true,
"items": [{
"base": 1949,
"data": [43, 41, 25],
"text": "Total",
"selected": true
}]
}, {
"text": "Gender",
"selected": true,
"items": [{
"base": 175,
"data": [44, 44, 24],
"text": "Male",
"selected": true
}, {
"base": 434,
"data": [42, 39, 27],
"text": "Female",
"selected": true
}]
}],
"view_settings": {
"chart_type": "bar",
"placeholder_index": 0
}
}]
}
For more information on the payload please check the payload details page.