Enterprise human resource management systems with LDAP integration?

Question

LDAP

Please tell me the best practices and solutions for linking HRIS / HRMS together with AD / LDAP, primarily for such tasks:
1. generating data on personnel
2. notifying the IT department about the necessary / unnecessary workplace (workstation is needed or not), availability of a telephone
3. formation by one's own means or through the API of the telephone directory and the hierarchy of the organization
Surely many faced such problems when the company grew and the information flows turned into a mess, in which almost every step was performed by the manual labor of the operator. Even though it's all automated. But what?
ps as usual, priority is open source

Answer 1

Such systems are very diverse, for personnel management we use enjoyerp.pro https://www.youtube.com/watch?v=DBcP_Dgv5ck