Problem in schedule agreement automatic deletion ID flag in item condition

Dear Expert,

Whenever user trying to change the Target quantity in ME32 and after that system automatically flag the deletion ID in item condition for a condition: (ZTAC) Manually entered condition type.

Even I checked in m/06 for this there is no access sequence, delete box under change can be made also untick and condition record.

Kindly give me solution

Regards

Manoj.R