ExoPlayer: Response code 400 on device certificate provisioning request.

Describe your question in detail.

We are observing a small % of users getting 400 response codes for device provisioning requests from Feb 3, we reached out to our widevine partners for this Issue but they found nothing was off on their side. Unfortunately, the error is not reproducible on our side but we do have the request and response of the API call. just wanted to ask if this Is a known intermittent Issue or something is really off here?

These were the few Top widevine system Ids facing this Issue (if this helps) : 10335, 8542, 8968, 11190 We are using 2.14.1 as the base exoplayer version.

Request API URL

https://www.googleapis.com/certificateprovisioning/v1/devicecertificates/create?key=AIzaSyB-5OLKTx2iU5mko18DfdwK5611JIjbUhE&signedRequest=CukGEgSTkoq-GgQIABIAKrgGCgx3aWRldmluZS5jb20SEFFDT-KkTHY7zCyCai1u-acagAQfNEomPDWlNert37nAJctsX320995yS_HdXjINpWsRLt5NK55xLuHbLzhG_dVBEW-yrJX0wwd5SCj225zCjwuW_ETRNcPejNgJSArxTq32wCGDEpxKhjJ_g-TThiXXGd337KJ0inZOSpHc-NhgE5Qq7gVpz1PYX3FH14RNBpXltgoz3WYW6FUwZseMYRNwAEq93SFm5a5xU5rE_3zQrhKMs7tpnvfJ8UM3fdEntrEBZJBbNQuzvvZjKOedrNr37TOvOQGU7H1pm8o7ENsZfnM5XhCAs3RX_yj-0mDW0SuTksE7XUQtNcmMp-OkHWUnTA4ZI7NBoX3WVaixtKbr10ZxQoDl7SacIz7MlMqR0mFQbtrwG2cVsMUlAMJepX_twLmecpMGG1H4nmKglGcC4FTGzxNy0o7jNYDN-JSFGt2Oa25O-vmo2Wx0fe89cNq6pC4SsjGBvJACQ6iZmNydIRHSNne0xth0ydg63zSOU7TlCffaoRcx38xj9vuCgcT0_r15aElWtQxwLDG56iDseCbzvxCPC3YVXAE-oa0I4auHwabL3QaXIR4CEKfiw2jMqGzG-604hhf8wgB-no1Z0jyIO7FIuyHffQ8sitGHdrXQkmQdSdtiwjCqycecvHThVA2m0VqplCGRFKueS0E-1nZSvaYBQHwA-HOh_7Y334mx0CIQySptQDaxf86j05NNrfhu_CqAAo5Lz3TV-xwkbBl6s7ain_J93oh16CGWfoSU3z9W9O-fqUMxf_9CS-zTPhBk66c2SKKqivDgm6OjQKjzTNyK8CLkntypowhOkuTegDXunU

Response

{
  "error": {
    "code": 400,
    "message": "Invalid Value",
    "errors": [
      {
        "message": "Invalid Value",
        "domain": "global",
        "reason": "invalid"
      }
    ]
  }
}

cc @SaurabhOfficial @vinodkputta