"Backend error: 'INVALID_INPUT'" for RKD API retrieve news headlines
Good day,
I was calling the RKD API to retrieve the news headlines with specific topics. Looks like if I place too many topics there, it will be prompted with "Backend error: 'INVALID_INPUT'":
{
"Fault": {
"Code": {
"Value": "s:Receiver",
"Subcode": {
"Value": "a:General_Errors"
}
},
"Reason": {
"Text": {
"lang": "en-US",
"Value": "Backend error: 'INVALID_INPUT'"
}
},
"Detail": {
"ClientErrorReference": {
"Timestamp": "2021-04-25T07:02:26.1319766Z",
"ErrorReference": "e046c5a25df44e848848ed9c1e3443e7",
"ServerReference": "9EB52DEFB1853C9230A344FBDFD9B815D5EBF21709E0E901"
}
}
}
}
Do we have guideline or documentation on this limitation, i.e., the maximum length of the request body?
One more fact, if I remove the "lanaguage" filter condition, then I may even place 2 or more topics condition there, so I guess there's some limitations on the length of the string in the request body.
Attach the sample request:
(if just remove one topic condition, e.g., the last "AAA", then it will pass)
Best Answer
Answers
-
Hello @Frederic
I can replicate the issue with the RKD RetrieveHeadlineML_1 service and your request message
I cannot find any document about request message/filter limitation in RKD API Developer document page except “The number of headlines returned by a response is limited to 1000 in Refinitiv Knowledge Direct API. Headlines and corresponding stories can only be retrieved for the last 90 days." .
I am contacting the RKD API team to check on this request message and issue.
1
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