use below api endpiont and create  auth.php https://einvapisandbox.irp5.in/irp5/irpauthapi/v1.0/apiAuth it requires Client ID* :6eb451cd-e858-4152-9398-690dd726ee3c Client Secret* :taxassist 
PAN* :AZNPA2013P method Method : POST
 Payload parameters User Name* :gvaanand Password* :Ana@8123030275  after using this it it will generete App Key* : example XQMJTBsHIldZenp1XHIWSiskLxFVEgc0HEVlP3QOMAw= and get Auth Payload - Plain text as below {
  "action": "ACCESSTOKEN",
  "username": "gvaanand",
  "password": "QW5hQDgxMjMwMzAyNzU=",
  "appKey": "XQMJTBsHIldZenp1XHIWSiskLxFVEgc0HEVlP3QOMAw="
}  Auth Response - Plain Text get as below {
  "Status": 1,
  "Data": {
    "ClientId": "6eb451cd-e858-4152-9398-690dd726ee3c",
    "UserName": "gvaanand",
    "AuthToken": "Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsIng1dCI6IkNOdjBPSTNSd3FsSEZFVm5hb01Bc2hDSDJYRSIsImtpZCI6IkNOdjBPSTNSd3FsSEZFVm5hb01Bc2hDSDJYRSJ9.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.JcD1X_6FOruUlbPyBFfGICE5VTulqfpgVlv8cc2ioRo41Z--CeVQAFwmAO8dTrEqWOgjdNaRdxvlEwGDDIp1T-zdBPdVcaNzkLHXnMfSUxc1XMaQH2ptsTrkoMl8931S4jU1i0MAAn9gyATFYR69DHCA-rDrPgdV4HQggFapMww-0h3bmVChJHteqnIW5j8fRFWzWy-Bo7ubp77vi8bS4A49wXRO-ebhzFWY9K7kdQxIb5pZLtgXx3j5t75d2W-G94ewL35qHGSsczVFv6wVmivxa6EkzAb6IawMudks43NOXZgdgZoo6-r27fjt54FXW5wTIyZH5U74VCH8LM4TWA",
    "Sek": "i1zs3P6Bo0nux/N29wpX9YZBYoUOa7gM5QLr+lo80xw=",
    "TokenExpiry": "2025-05-14 14:13:41"
  },
  "ErrorDetails": null,
  "InfoDtls": null
} Create a page To access the API, application should first authenticate using the credentials. The credentials have to be generated by the taxpayers and get the auth token issued. Same auth token is to be used to access subsequent APIs. Any hits to this API within the Token Expiry time, system will return the same token. On expiry, same authentication API needs to be invoked to issue new auth Token.Method	POST