Posting on Error message : Prebooking exists for personnel number

Perhaps you have faced this error when do the changes in PA records or OM integrations:

Scenario : While performing Employee cost center conversions by assiging to Postion/Org Units, I have faced the issue while doing the integrations from OM to PA

Reason:
This error is coming from the activation of switch PLOGI EVENB and PLOGI EVEGC. here is the functionality Setting the 'PLOGI EVENB' switch to 'X' enables you to move a person,position or organizational unit within an organizational structure, when these changes lead to a change in company code for the person(s) concerned.

The personnel numbers of the persons concerned are locked in PA. The only personnel action you can now carry out these personnel numbers is Organisational change. You must carryout this action before you can make further chagnes to the infotypes for the persons concerned .

Technically the lock what we are getting was caused by entry in the table T77INT.

Soluctions:
- Run the program RPLEVENT to create the actoin what it demands.
- To solve this problem, you should create a blank event reason for
personnel event '02'.
You can do in IMG -> Personnel Management -> Personnel Administration -
>Setting Up Procedures -> Actions -> Create Reasons for Personnel Actions

- Setting of PLOGI EVENB:
"Setting the 'PLOGI EVENB' switch to 'X' enables you to move a person, when position or organizational unit within an organizational structure, these changes lead to a change in company code for the person(s) concerned.
The personnel numbers of the person(s) concerned are locked in Personnel Administration. The only personnel action you can now carry out for these personnel numbers is "Organizational Change". You must carry out this action before you can make further changes to the infotypes for the person(s) concerned. Technically, the lock is caused by an entry in table T77INT.
Note that this switch only works when the 'PLOGI ORGA' switch is switched to 'X'."