while creating RFx getting error

hi

we are using SRM 7 SP13 classic scenario.while creating RFx getting error.

Line 0001: Item type 'Service' not allowed for this Item.

i created SC with free text and selected type -service .when purchaser is trying to create RFx getting error like

Line 0001: Item type 'Service' not allowed for this Item

please suggest if anyone aware about issue.

Regards

Vijay Patil

.