System error : error during insert in table RSDB- Message No : ME807

Hello MM Guru’s,

I follow the below steps to reopen / undelete the PO line item,
1. Go to t-code --> ME22N
2. Select the respective line item of the PO
3. Click on undelete icon
4. Save

5. System issues the update termination as “System error: error during insert in table RSDB” Message No: ME807.

I also aware that if I tried to use the same PR number to create more than 99 Purchase Order's this error observe due to product limitation.

Additional Info:

I have verified the similar thread mentioned below but this doesn’t provide the exact root cause of my issue,

http://scn.sap.com/thread/1928252

Now my query is while reopen / undelete the PO line item the update termination happens. Please let me know your valuable input to proceed further on this issue with your detailed analysis.

Regards,

Kumar S