Anyone ever faced this issue:

cause: {
      type: "internal error",
      code: "INSUFFICIENT_PERMISSION",
      details: "Permission Violation: You need  the 'Transactions -> Sales Order' permission to access this page. Please contact your account administrator.",

make sure also that the roles option on the deployment is selected

It was, there is what I think is a huge bug in NetSuite’s server side promises implementation, the code inside the

then

does not inherit the creator/caller/parent permissions…