How to solve a schedule refresh problem for getting data from API?

[Yash48]

Hi guys, I am using the below power query code for getting the data from an API. I am using a loop to get the data for many rows as the API can provide onpy 5000 rows for a call. But I am not able to apply data refresh. I even tried using Relative path as suggested by few people, but it's still not working. I cannot provide the API key as it is confidential. Also, keep in mind that I do not want to use personal gateway. Thank you in advance.

let
#"FullQuery" = let

pageSize = 5000,
sendRequest = (page) =>
let
APIKey = "test",
APIUrl = "https://api.genscape.com/",
startDate = Date.ToText(Date.AddMonths(Date.From(DateTimeZone.UtcNow()),-11),"yyyy-MM-dd"),

Response = Web.Contents(
"https://api.genscape.com/",
[
RelativePath ="storage/oil/v1/tank-volumes",
Query=
[
revision="published",
format="json",
startDate=startDate,
limit = Number.ToText(pageSize),
offset = Number.ToText(page * pageSize)
],
Headers=[#"Gen-Api-Key"= APIKey]
]),
Data = Json.Document(Response)[data]
in
Data,
Loop = (page as number, AccumData as list) =>
let
Data = Function.InvokeAfter(()=>sendRequest(page), #duration(0,0,0,2)),
Result =
if List.Count(Data) < pageSize
then Table.FromRecords(List.Combine({AccumData, Data}))
else @Loop(page + 1, List.Combine({AccumData, Data}))
in
Result
in
Loop(0, {})
in
#"FullQuery"

I am getting the below error when I try to schedule refresh.

[lbendlin]

"But I am not able to apply data refresh"

Please elaborate. What error message did you get?

[Yash48]

Hi lbendlin,

I am getting the below error message.

Thank you,

Yash

[lbendlin · Accepted solution]

Sorry I hadn't read your post correctly.  What you need is a base URL that actually exists on the service.

https://api.genscape.com/ is not valid (the server refuses to serve that page). 

Select "skip test"  and ignore the error.

[lbendlin]

Can you successfully fetch a single page? The first ten records? The error message indicates that the URL is incorrect.

[Yash48]

Yes, I can fetch a single page when I use the below way to load data instead of using query to load many pages using loop.

[v-kelly-msft]

Hi  @Yash48 ,

Try the measure provided by Chris to deal with 404 error from Web.Contents:

https://blog.crossjoin.co.uk/2016/08/09/handling-404-not-found-errors-with-web-contents-in-power-que...

Best Regards,
Kelly

Did I answer your question? Mark my reply as a solution!

[Yash48]

Hi Kelly,

That article was not able to solve my problem. The api url is working fine when I use in PowerBI desktop, but not when published.

Thank you,

Yash