SRM - Error creating the follow-on document (SC->PO)

Hello SRM Masters,

I work with SRM 5.0 and R/3 ECC and I have a problem with creating PO from SC.

When shopping cart is approved application monitor returns error:

<i>Shopping cart 1000000xxx: Error creating the follow-on document.</i>

As I know there maybe some problems with number ranges in SRM and backend system or with organizational structure.

Could any one help me to sole the problem.

<b>

SRM - Define Number Ranges for Shopping Carts and Follow-on Documents:</b>

No:PO Range 9000100000-9000199999

RQ 9000200000-9000299999

RS 9000300000-9000399999

none of the is external

<b>ERP site:</b>

PO number range

No:90 Range 900010000009000199999 - external

Purchase requisition number range

No:05 Range 9000200000-9000299999 - external

<b>SRM Define Transaction Types</b>

BUS 2201 PO

Transaction type ECPO IntNumberRange - PO, ExternalNumberRange - 90.

<b>ERP Purchase requisition Define Document Types</b>

DocType ECPO NoRange External - 05

<b>ERP Purchase order Define Document Types</b>

DocType ECPO NoRange External - 90.

I will appreciate any help.