"ME045 G/L account 6750310 cannot be used"

Hello experts,

I sincerely need your help to get this error resolved. Whenever I try to create a shopping cart using <b>WBS Element</b> or <b>Profit Center</b> account assignmnet category, the shopping cart gets created but when i check its status, I get '<b>ME045 G/L account 6750310 cannot be used</b>' error.

To give you an overview of what changes I did, I created a custom attribute for Profit Center using T77OMATTR table in SM30.

When you create an attribute, it asks for a reference table & field name. I kept it blank and created an attribute. Then linked it to BBP Scenario. Finally linked it to object type O and object types S. So now my custom attribute XYZ is created.

But when I try using it to create a shopping cart, I get the above said error!!

I get the same error for WBS Element too though WBS element already existed in T77OMATTR .

Am I missing something??

Warm Regards

Ayush