Budget control check - error message below 100%

Question

Dear Experts,
I am facing a problem in th budget check, I have the tolerance settings as below:
90% - 1 Warning message
101% - 3 Error message
But system is giving me error message even when it reaches 98% itself, its not allowing to create the PO. I should use 100% of the budget, but it is not happening, can some one please throw some light on this, why system is behaving like this?
Regards,
Praveen

Answer 1

Ahmed,
Some interesting things I have observed here,
The budget is given in IM52 as below:
There is only one WBS element in this project:
PROJECT123 - Overall - 60,000 and 2010 - 51,000.
Then we have created a PO directly, (there is no PR for this) with the same WBSE PROJECT123.
Here my observation is as follow:
Tolerance limits are defined as below:
1000     ZP0002     Projects budget profile-(GOCL)     ++     1     90.00     0.00      INR
1000     ZP0002     Projects budget profile-(GOCL)     ++     2     95.00     0.00      INR
1000     ZP0002     Projects budget profile-(GOCL)     ++     3     101.00     0.00      INR
The PO value is 50,000, then there is no message, not even warning. (here system is directly checking the budget against overal value, not the FI year). If its checking against over all values, there will be no message as it is 83%
There is no message till PO value is 54000, as it falls below 90% (the first line of the tolerance limit).
From PO value 54001 onwards, the warning message is produced till PO value is 57000.
Item 010 WBS element C-0005 budget almost exhausted
Message no. BP613
Diagnosis
The assigned funds are 5,999.00 INR less than budget  in document item 010 WBS element C-0005 .
From the PO value 57,001 onwards the system is producing the error message
Item 010 WBS element C-0005 budget almost exhausted
Message no. BP613
Diagnosis
The assigned funds are 2,999.00 INR less than budget  in document item 010 WBS element C-0005 .
How come the same message number is being produced as Error message and why it is producing the error message though it has not reached the 101% (as per the last line of the tolerance limit)?
Once the PO value reaches to 100% i.e., 60,000/- system is producing another error message:
Item 010 WBS element C-0005 budget exhausted
Message no. BP607
Diagnosis
Budget  is exhausted in document item 010 WBS element C-0005 .
Once the PO value is exceed by 100% i.e, greater than 60,000 (I have maintained 60001 as the value) system is producing a different error message:
Item 010 WBS element C-0005 budget exceeded
Message no. BP603
Diagnosis
Budget  was exceeded by 1,000.00 INR in document item 010 WBS element C-0005 .
This error is from the PO value of 60001 onwards.
My questions are:
1. Why system is not check the AVAC with the FI year budget, why only with the Overall budget?
2. Why system is giving error messages from 95&% onwards? (see message number 613 above)
3. Why system is not allowing to utilize upto 101% of budget value?
4. Why so many different types of error messages?
Note: I have tried to search the SAP notes based on the message numbers, but could not find out any appropriate one.
Please help me out solving this problem.
Praveen