Post to FB group which is linked to FB pages failed

[itw.portal@gmail.com]

I had bought the SNAP Pro. FB also had allowed my app to use the Group API. I also followed the introduction from SNAP sites. I enter the group ID, use the correct account, and also enter the number of linked fan page in advance tab. Then I test, but it shows error message below.

———————————————–
Array
(
[Warning] =>
[Error] => Unsupported post request. Object with ID ‘XXXXXXXXXXXX’ does not exist, cannot be loaded due to missing permissions, or does not support this operation. Please read the Graph API documentation at https://developers.facebook.com/docs/graph-api

| Are you posting to a secret or closed group? Please see: http://gd.is/fbe2
)
Array ( [Warning] => [Error] => Unsupported post request. Object with ID ‘XXXXXXXXXXXXXX’ does not exist, cannot be loaded due to missing permissions, or does not support this operation. Please read the Graph API documentation at https://developers.facebook.com/docs/graph-api
| Are you posting to a secret or closed group? Please see: http://gd.is/fbe2 )
————————————————

Can any one help me to solve the problem?

Otherwise, because I had more than 100 accounts to manage, I am wondering where can I edit the account list directly. It really waste time to setup each by each from the browser.

Thank you for help.

[itw.portal@gmail.com]

I had add myself to be an Administrator in the group which linked to my page which I already am an Administrator. Then the error message had changed to be:

Array
(
[Warning] =>
[Error] => Error validating access token: The user has not authorized application XXXXXXXXXXXXXXXXXXX.
)
Array ( [Warning] => [Error] => Error validating access token: The user has not authorized application XXXXXXXXXXXXX. )

What should I do?

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