Hi Oscar,
please follow below steps to fix the error,
1. you will find RFC_NO_AUTHORITY dump is ST22. please read this dump and identify the object name for which TMSADM user dont have authorization.
2. Go to SU02, and provide profile name s_a.tmsadm and enter.\\
3. Now double click on S_RFC object, from this screen select "Name of RFC to be protected" and click on "Maintain values"
4. here provide the object name as per dump of #step1.
5. save and activate. it will fix your error.
Regards,
Anil