Hi Gergo Tisza, Thanks for your response. I realized my mistake. Sorry for the late response from my side. Now, both csrf token and upload API are changed to commons API. Then the above issue resolved. *Below I shared some needs and clarification * 1. It is possible to support .wav or .mp3 format files to in Wiktionary words pronunciation audio format. currently, support .ogg only. Because I think native Android does not support .ogg for record audio. If need to .ogg we need to use NDK. 2. Successfully uploaded audio files to commons. But some times not linked to Wiktionary word. case 1: No issues - Worked word - https://ta.wiktionary.org/wiki/அக்குரன் audio - https://commons.wikimedia.org/wiki/File:Ta-அக்குரன்.ogg case 2: Audio have .ogg format. But not linked in particular word. word - https://ta.wiktionary.org/wiki/தடிக்காரன் audio - https://commons.wikimedia.org/wiki/Ta-தடிக்காரன்.ogg Why this issue comes then what I do? 3. When I uploading format as .wav to commons then auto-generated .ogg and .mp3 formats. This .ogg file is possible to link that work. Then .ogg audio file name contains existing file format name too. Like : Uploaded - Ta-மதிமுக.wav Auto-generated by commons - Ta-மதிமுக.wav.ogg and Ta-மதிமுக.wav.mp3 Note: Above .ogg and .mp3 file name contains existing(uploaded) file format .wav too. Ex : uploaded - https://commons.wikimedia.org/wiki/File:Ta-மதிமுக.wav ogg - https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4b/Ta- மதிமுக.wav/Ta-மதிமுக.wav.ogg mp3 - https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4b/Ta- மதிமுக.wav/Ta-மதிமுக.wav.mp3 4. Some times I got a message "Invalid CSRF". I think this comes may be session time out or wrong csrf token. But I am saving first csrf token after login. Then after every edit request use same csrf token no issues on within 3 to 5mins. after that comes that "Invalid CSRF". How can solve this? 5. When I uploading audio files to commons comes this message "Warning" - "exists-normalized". It may come file name already exists I think. In commons, check contains an upload file name. I try to upload word like "en-abcd.ogg" Commons through error mentioned above. But "en-abcd.ogg" don't have in commons But have "en-ab.ogg" or "en-abcdef.ogg". How to resolve those issues? Thanks Manimaran.K On Thu, Jan 10, 2019, 12:26 AM Gergo Tisza <gtisza(a)wikimedia.org> wrote: