Hi,

I think issue is with the way you entered python code for amount calculation in that rule. Sequence is just an integer that determines the position of salary rule appearing in the payslip. So if you enter it as 0, that rule will appear first on payslip salary lines. The error shows wrong python code defined.

check this:

In the above image, the Amount type determine the way to calculate amount for this rule and if python code selected, you need to enter the python expression on Python code field. When you try to create a new rule, it shows the default set of #Available variables. So you need to write the expression based on that. You should write like result = **your python expression here**

For eg:

result = (payslip.company_id.dearness_allowance and - ((contract.wage + DA) * 0.10) or - (contract.wage * 0.10))

Hope it helps