SAP BP: Cannot add or change address to a Business Partner

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Symptom
Add/change of an address to a Business Partner is not possible when there is an RFC communication error
Other terms
BUPA_ADDRESS_ADD, ADDR_DUPLICATE_CHECK_FOR_BAPI, RFC error, communication error, BAPI_ADDESS_CHANGE, BAdI ADDRESS_SEARCH
Reason and Prerequisites
When a foreign application tries to add/change an address to a BP, the process ends if there is an RFC communication error while calling the [...]

Business Partner Upgrade FAQ

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Symptom
This note tries to answer questions on the SAP business partner that may have come-up on an upgrade to SAP_ABA 5.0A and higher releases:
1. Is table BUT001 obsolete?
The table BUT001 is obsolete from SAP_ABA release 5.0A and higher. It is now possible to maintain multiple identification and industry sector information for a [...]

BP_ADU: Short dump for where-used list for address

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Symptom
You execute a where-used list for an address in the business partner. The system generates a short dump because the function module FS04_BUPA_WHERUSED_SWITCH does not exist.
Other terms
Business partner, address, where-used list, BUSWU11,
FS04_BUPA_WHERUSED_SWITCH, BUA_BUPA_WHERUSED_ADDR
Reason and Prerequisites
The function module FS04_BUPA_WHERUSED_SWITCH was required only in SAP_ABA Release 6.20, to differentiate between time-dependent and time-independent [...]