Error: Input must be in the format __.___.___.__~ when input nett price in PO
I am new in SAP world. I want to learn in MM module
I have problem when creating PO (ME21N). when I input nett price in decimal for example 2.2 EUR, there was an error 'Input must be in the format __.___.___.__~'. But when i changed the nett price value with 2 EUR, it seems okay.
I have already read some tips via google, and they said about using Tcode CUNI, but i still do not understand.
I hope someone can guide me what step by step should i run.
thx in advance before