Hi please look that both configs are ok.
- Adaptively shape down to 256Kbps if BECNs are received
---
map-class frame-relay DLCI_205
frame-relay cir 512000
frame-relay bc 25600
frame-relay be 0
frame-relay mincir 256000
frame-relay adaptive-shaping becn
policy-map SHAPE_DLCI_502
class class-default
shape peak 256000 12800 12800
shape adaptive 256000